Best 135° Long Drill Bits in 2026

Standard drill bits often fail or wander when you hit hard metals, leaving frustrating divots in your workpiece. The COMOWARE Impact Drill Bit Set solves this by combining HSS construction with a premium titanium finish that resists rust and wear. During testing, the 135-degree split point tip was a standout, preventing the bit from walking and ensuring an immediate, clean start. The parabolic flute design is equally impressive, moving chips away rapidly to keep friction and heat build-up to a minimum. Whether you are an HVAC pro or a DIYer tackling aluminum, copper, or wood, the 1/4 inch hex shanks handle heavy impact torque without breaking a sweat. It is a versatile, high-speed solution that feels built for real-world job site demands.

Deep-reach drilling tasks in tight spaces demand a bit that won't wander, and this DEWALT extra-long black oxide bit is the specialized tool you need for those awkward angles. I found the 135-degree split point incredibly effective because it bites into the material immediately, preventing that frustrating 'walking' effect on hard surfaces. The parabolic flute design is a standout, significantly improving chip ejection whether you are working through metal or wood. While the 31-degree helix is designed to temper the aggressiveness of the flute, it still maintains a smooth, efficient cutting action. The black oxide coating provides a necessary layer of wear resistance that helps this bit last through demanding jobs. It is a straightforward, reliable solution for anyone needing an extended 12-inch reach without sacrificing precision.

Most people assume a thinner oxide coating means a weaker tool, but this gold oxide treatment on the Drill America cobalt bit is actually a strategic advantage. By keeping the surface treatment thinner than standard black oxide, it maintains performance levels nearly identical to uncoated tools while providing essential protection. This 6-inch extension bit is a lifesaver when you need extra reach to penetrate high-tensile materials like titanium, inconel, or stainless steel. I found the 135° split point tip to be a game-changer because it bites immediately, preventing that frustrating bit-walking that ruins precision work. Since it features a standard round shank, it integrates seamlessly into almost any tool holding system you already have in your shop.

Metalworkers tackling stainless steel need to ditch standard HSS bits and upgrade to these Drill Hulk cobalt steel drivers immediately. I found that the 5% cobalt composition makes a massive difference when the friction starts generating intense heat, as the high red hardness prevents the bit from softening mid-drill. These jobber length bits feature a 135-degree split point and a 3-flat shank for stability, which is crucial when you're working through stubborn, hard materials. Unlike cheaper alternatives that lose their edge once the coating wears off, the hardness in these is uniform throughout the entire material. This means you can repeatedly sharpen them to maintain a precise cutting edge, making the 12-pack a much smarter long-term investment for any serious workshop.

Most DIYers settle for standard high-speed steel bits that dull the moment they hit a piece of stainless steel, but the COMOWARE Cobalt Set is built for much harsher realities. I found that the 5% cobalt M35 composition makes a massive difference when you are drilling through stubborn materials like cast iron or titanium alloys. The 135° split point is a game-changer because it bites into the metal immediately without that annoying tendency to wander across the surface. With 115 pieces ranging from fractional to numbered sizes, you have almost every increment you could need for professional-grade work. Even the storage is thoughtful, featuring an indexed metal case that keeps your workspace from turning into a chaotic mess of loose bits.

The first time you feel the 135° fast-cutting tip bite into a piece of aluminum, you’ll realize this isn't your standard hardware store kit. These HURRICANE drill bits are engineered from high speed steel and finished with a titanium coating that does a heavy lift by reducing heat buildup and preventing rust. I was particularly impressed by how the bits automatically center themselves, allowing for quick penetration through fiberglass or cast iron without needing to lean into the drill. With 230 pieces ranging from 3/64" all the way up to 1/2", you won't be hunting for a specific size mid-project. The included hard plastic storage box keeps this massive collection organized and portable, making it a reliable companion for everything from woodworking to metalworking.

The first time you slide one of these bits into your drill, you will notice the substantial weight and premium feel of the W4 high-speed steel construction. Unlike standard sets that struggle with tougher surfaces, these bits feature a 135-degree split point and a self-centering design that prevents the dreaded bit-walking on metal. I was particularly impressed by the combination of an amber coating and black oxide finish, which helps manage heat during heavy-duty tasks. Whether you are boring through stainless steel, titanium alloy, or dense wood, the fully ground twist design keeps friction low and performance high. It is a comprehensive, professional-grade kit that covers everything from tiny 1/16" holes to substantial 1/2" diameters, all neatly organized in a durable storage case.

Heavy-duty contractors and serious DIYers who are tired of snapping bits mid-job need the Milwaukee Thunderbolt set in their toolbox immediately. These aren't your standard, flimsy bits. They feature a significantly thicker core designed for extreme durability and a much longer service life. I found the 135 split point tip to be a game-changer because it bites into the material instantly without that annoying walking or skidding. The parabolic flute design does an excellent job of clearing out chips and debris quickly, which keeps the temperature down and prevents overheating. Plus, the 3-flat secure grip shank ensures the bit stays locked tight in your chuck, eliminating the frustration of slipping during high-torque applications.

It is easy to assume that a budget-friendly drill bit set will dull after just a few holes, but these amoolo bits actually hold their edge remarkably well. I was impressed by the 4341 high-speed steel construction, which feels significantly more robust than the standard 4241 grade you typically find in these kits. The titanium coating adds a necessary layer of wear resistance, while the 135-degree split point is a total game-changer for precision. It bites into the material immediately without the annoying 'walking' effect, meaning you can skip the center punch entirely. Whether I was working through aluminum alloy or thick plastic, the fully ground spiral grooves kept the debris moving and prevented heat buildup. It is a solid, reliable kit for any DIYer tackling metal or wood projects.

Contractors tackling deep, awkward cavities in structural framing need this specific DEWALT bit in their kit immediately. The extended 12-inch length is a total game-changer when you are trying to reach through studs or into recessed spaces where standard bits simply won't touch. I found the 135-degree split point incredibly reliable because it bites into the material instantly, which completely eliminates that frustrating bit-walking that ruins your precision. The black oxide coating feels substantial, providing the kind of wear resistance you expect from a professional-grade tool. At this price point, it is a specialized workhorse that saves you from the headache of repositioning your drill mid-job.

This STROTON cobalt drill bit set is a heavy-duty essential for anyone tired of burning through cheap bits when tackling stainless steel. The M42 8% cobalt steel construction reaches a massive 68-70 HRC hardness, meaning these tools handle heat and wear far better than standard high-speed steel. I noticed the 135-degree split point design is a game changer. Instead of the bit grinding sluggishly through metal, it actually slices through, producing long iron chips that indicate a clean cut. While the upfront cost is higher than basic sets, the ability to run three to five times faster makes the cost per hole incredibly low. With 19 pieces ranging from 1mm to 10mm in 0.5mm increments, you have a specialized tool for everything from aluminum to hard metals.

After weeks of use in my workshop, these Amoolo cobalt bits have proven themselves to be a serious upgrade over standard HSS sets. The 5% cobalt content in the M35 steel makes a noticeable difference when you're pushing through stubborn materials like stainless steel or cast iron. I was particularly impressed by the 135° split point, which bites into the metal immediately without the annoying bit-walking that usually requires a center punch. The fully ground spiral groove does a great job of clearing out debris, keeping the temperature down during heavy drilling. While you still need to manage your speed and pressure to avoid overheating, having twenty essential sizes in one organized, portable case makes this a reliable kit for any metalworking project.

The metallic shimmer of the titanium nitride coating is the first thing you'll notice, signaling a tool built for serious heavy-duty work. I put this Neiko bit to the test, and the 135-degree split-point tip makes a massive difference by preventing that annoying bit-walking when you first touch the material. Because it uses #4241 high-speed alloy steel, it slices through hardened steel and thick wood with surprising ease. The 2-flute spiral design is a clever touch too, as it automatically deburrs the edges while you work, saving you the extra step of cleaning up the hole afterward. Whether you are enlarging an existing opening or drilling fresh ones, having nine different sizes from 1/4 inch to 3/4 inch in a single tool keeps your workflow incredibly fast.

The heavy, industrial weight of these bits in your hand immediately signals they aren't meant for light hobby work. This Hiltex 8-piece set is built for the serious user tackling steel, copper, or stainless steel. I was particularly impressed by the 135-degree split point geometry, which bites into the material instantly without that frustrating 'walking' effect on the surface. The tri-flat shanks are a massive win for stability, ensuring the bits stay locked tight in your chuck to prevent slippage during high-torque drilling. Since they are constructed from heat-treated carbon steel with a black enamel coating, they feel rugged enough to handle heavy-duty, repetitive cycles in a drill press. Everything arrives neatly organized in a portable case, making it easy to grab this specific range of large diameters whenever a big project calls.

The STROTON 6% Cobalt HSS Drill Bit Set delivers exceptional heat resistance that makes drilling through stainless steel feel surprisingly effortless. I was impressed by the triple-ground cutting edges, which actually slice through metal into long, clean iron chips instead of just grinding away at the surface like a dull bit. Because these are rated at 66-69 HRC, they can run two to three times faster than standard bits, which really changes your workflow efficiency. While the initial investment is higher than basic steel, the longevity of the material means you end up spending much less per hole over the long haul. Whether you are tackling iron plates, aluminum, or even PVC, these 135-degree jobber bits provide a level of professional durability that holds up under intense friction.

Drill bits often wander across a workpiece or spin uselessly in the chuck, making precision tasks a frustrating mess. The JEFE HEX 1/2-inch twist bits solve this through a combination of a 135-degree split point and a specialized three-flat shank design. During testing, the split point allowed for immediate penetration without the typical 'walking' effect, while the three-flat shank provided a rock-solid grip that prevented slipping. The black and gold coating isn't just for looks. It significantly improves lubricity and helps manage heat during heavy-duty drilling. Whether you are working through steel, aluminum, or even plastic, the parabolic flute design ensures smooth chip removal. For a two-piece set, the durability and accuracy offered here make it a reliable staple for both serious DIY projects and routine home maintenance.

Drill bits often wander across a metal surface before they actually bite, leading to messy, imprecise holes that ruin your workpiece. The OXTUL 12-piece set tackles this frustration with a specialized 135-degree tip and a twist design that promotes self-centering and rapid chip clearance. These aren't your flimsy hardware store basics. They are constructed from M2 High Speed Steel with a rock-hard HRC 62-63 rating, meaning they can handle mild steel, copper, and aluminum without immediate dulling. The black and gold coating paired with a bright finish provides a durable edge for workshop or service vehicle use. Just keep in mind they aren't rated for masonry or stainless steel, but for general metal and wood projects, they offer professional-grade stability.

After weeks of use in my workshop, these HPHOPE cobalt bits have proven to be a reliable staple for heavy-duty metalwork. The M35 high-speed steel, infused with 5% cobalt, provides the kind of wear resistance you need when you're drilling through stubborn materials like stainless steel or cast iron. I was particularly impressed by the 135° split point design. It bites into the metal immediately without the bit wandering, which saves a lot of frustration during precise tasks. The fully ground spiral grooves do a great job of clearing out debris and managing heat, preventing the bits from dulling prematurely. Since they come in a handy portable case, they are easy to keep organized for both professional projects and quick household repairs.

The EFFICERE 8-Piece Premium Drill Bit Set delivers professional-grade precision thanks to its specialized 135-degree split point design. I was particularly impressed by how the self-centering tip prevents that frustrating drill walking, allowing for clean holes in everything from stainless steel to copper. The dual coating of gold titanium and black nitride isn't just for show. It actually holds lubricant better, which keeps things running smoothly during heavy use. Because these feature a 1/2-inch reduced shank with a tri-flatted end, they lock into your 3-jaw chuck without the usual slipping. Everything arrives organized in a rugged aluminum case, making this a solid, high-durability kit for anyone tackling serious metalwork or woodworking projects.

The MACXCOIP Cobalt Drill Bit Set delivers impressive versatility through its specialized M35 high-speed steel construction. I found that the 135-degree point tip is a game-changer for precision, as the self-centering design prevents that frustrating bit walk-off when you first touch the material. Whether I was working through stainless steel or softer mediums like wood and plastic, the twist design handled chip and particle removal efficiently to keep the cutting process smooth. The bits feel robust and polished, providing a level of sharpness that makes quick, effective drilling much easier. Plus, having all thirteen sizes from 1/16" to 1/4" tucked into a compact, indexed storage case means you aren't hunting through a messy toolbox to find the exact diameter you need for your next project.

Why settle for dull, wandering bits when you can slice through hardened steel with ease? The POWERTEC QDB2012 set is a heavy-duty solution for anyone tackling high-tensile materials like stainless steel, nickel alloys, or cast iron. These M35 cobalt bits are built with high-speed steel and optimal heat treatment to handle intense abrasion without losing their edge. What really sets them apart during a project is the 135-degree split point. It bites into the metal immediately, preventing that frustrating bit walking and eliminating the need for a center punch. Whether you are using a keyed or keyless chuck, these 6-inch jobber bits provide the stability and durability required for serious metalworking. Even better, you can sharpen the tips to maintain peak performance over long-term use.

Every DIY enthusiast and professional electrician needs the JEFE HEX drill bit set in their toolbox to stop fighting with slipping bits and wasted effort. These aren't your standard flimsy bits. The HSS titanium coating significantly boosts durability, lasting up to three times longer than uncoated alternatives. I was particularly impressed by the 135-degree split point tip, which bites into steel or wood immediately without that annoying 'walking' effect on the surface. Because they feature a hex shank, you can swap them directly into an impact driver for high-torque tasks without switching tools. The parabolic flute design also does a great job of clearing debris and keeping the temperature down, which is a lifesaver when you are drilling through tougher materials like aluminum or zinc alloy.

Most people assume a drill bit's lifespan is determined solely by its material, but the real secret to longevity lies in how it manages heat. The JEFE HEX 5/16" bit uses enhanced parabolic flutes and a titanium coating to actively pull heat away from the cutting edge, which is a game-changer when you're working through stubborn steel or zinc alloys. I was particularly impressed by the 135-degree split point. It bites into the material immediately without that frustrating 'walking' effect, meaning you can skip the center punch entirely. The hex shank is built with solid bonding technology to prevent radial runout, making it incredibly stable even when you're using a high-torque impact driver for heavy-duty MRO tasks or DIY home repairs.

Most people assume that drilling through stainless steel requires a heavy hand and a lot of patience, but these Hymnorq bits change that math entirely. Because they utilize M35 cobalt steel with a Rockwell hardness of up to 67, they cut through stubborn materials like cast iron and copper with significantly less friction than standard HSS bits. I was particularly impressed by the 135-degree split point design. It essentially eliminates the need for a center punch because the bit refuses to wander or walk across your workpiece. You get a much cleaner entry with less downward pressure, which saves your arms and your hardware. The set comes in a practical plastic case, making it easy to keep these five high-performance bits organized in a crowded toolbox.

The Milescraft 5Pc. Metal Stubby Bit Set solves your most frustrating access problems with its ultra-short profile. These bits range from 9/32 to 1/4-inch, making them the perfect solution for drilling into tight, cramped spaces where standard-length bits simply won't fit. Each bit is precision ground from M2 high-speed steel, which gives me confidence that they won't dull immediately when hitting tougher materials. The 135-degree standard tip ensures a clean start in metal or plastic, while the 1/4-inch hex shank makes swapping them out in a quick-change chuck effortless. At a very accessible price point, this little kit is a specialized necessity for any toolbox that handles precision work.

The BeHappy 29-piece M35 cobalt drill bit set delivers heavy-duty performance specifically engineered for the toughest metalworking tasks. I found that the 135-degree point design makes a massive difference, as it prevents the bit from walking across the surface and ensures a self-centering start every time. Whether you are tackling stainless steel, cast iron, or even titanium alloys, these bits handle high-tensile materials without breaking a sweat. The hardened, polished blades maintain their sharpness through repetitive use, which is essential when working with hardened steel. I also really appreciated the rose case. It feels much more robust and organized than the flimsy metal boxes you usually see in these kits. It is a comprehensive, professional-grade collection that keeps everything from 1/16" to 1/2" neatly indexed and ready for the job.

The JEFE HEX 9-Piece Drill Bit Set delivers impressive versatility for any home toolkit, offering a reliable solution for everything from quick DIY repairs to more demanding metalwork. What sets this set apart is the combination of high-speed steel and a titanium coating, which significantly extends the tool's lifespan compared to standard bits. I found the 135-degree split point particularly helpful because it bites into the material immediately, preventing that frustrating bit-walking on smooth surfaces. The 1/4-inch hex shanks make swapping bits into an impact driver seamless, and the parabolic flute design does a solid job of clearing chips to prevent heat buildup. Whether you are drilling through aluminum, copper, or wood, these bits feel stable and precise thanks to the high-torque manufacturing.

The first thing you’ll notice when you press these bits against metal is how they bite immediately without skidding across the surface. The 135-degree split point is a game-changer for precision, effectively eliminating that annoying 'walking' phase that ruins a clean start. I was particularly impressed by the parabolic flute design, which clears out debris so efficiently that the bit stays noticeably cooler during extended runs through steel or aluminum. Because they use solid bonding technology and a hex shank, they lock into quick-change chucks with zero wobble, providing the stability needed for high-torque applications. Whether you are a professional electrician or just tackling a weekend DIY project in the garage, the titanium coating ensures these bits outlast standard options by a significant margin.

The COMOWARE Stubby Drill Bit Set solves the headache of tight-clearance drilling with its ultra-short profile. I found that these bits are a lifesaver when you're working in cramped spaces where a standard-length bit simply won't fit. They are crafted from high-quality HSS M2 material with evenly distributed carbides, which keeps the cutting edge sharp even after repeated use. The 135-degree split point is a game changer for penetration, effectively clearing chips and sawdust while biting into metal, plastic, or wood without slipping. Plus, the 1/4-inch hex shank makes swapping them into a quick-change chuck incredibly seamless. It is a compact, reliable kit for anyone needing precision in confined areas.

The Mudder M35 Cobalt Drill Bit Set delivers serious heat and abrasion resistance that standard bits simply can't match. I found that the 135° split point tip is a total game-changer because it provides excellent self-centering ability, which stops the bit from walking across your workpiece right at the start. The torsional design isn't just for show. It actually helps clear chips and particles much faster during heavy drilling. Whether you are tackling stainless steel, titanium alloy, or even cast iron, these bits hold their edge remarkably well. Just keep in mind that because these are high-performance M35 cobalt tools, you need to stay mindful of your speed and pressure to get the best results from the 15-piece set.