Best Straight Long Drill Bits in 2026

Speed helix design for three times faster drilling than standard bits

Last 50 percent longer than high-speed steel

Easier drilling, reduced heat and extended drill bit life

Speed helix design for three times faster drilling than standard bits

Last 50 percent longer than high-speed steel

Easier drilling, reduced heat and extended drill bit life

STEP DRILL #1 1/8-1/2" 13 SZ

STEP DRILL #1 1/8-1/2" 13 SZ

STEP DRILL #1 1/8-1/2" 13 SZ

Speed helix design for three times faster drilling than standard bits

Last 50 percent longer than high-speed steel

Easier drilling, reduced heat and extended drill bit life

The drill bit is chrome-plated and hardened have 3 pieces of diamond grinding bits in 3 sizes, namely, 1 inch, 3/4 inch, 1/4 inch, along with 3 matching allen wrenches, different sizes and complete combination to fully meet your DIY use

The stained ceramic glass abrasive tool adopts a standard frosted design, and the Brass core reduces shaft binding and will not stick to the shaft of the grinder ,Made of quality copper material, and the surface is plated with diamonds, Diamond abrasive bonding surface is double plated , high strength, and long life

The hole diameter：8mm/0.31in.These diamond drill bits in MCB01, MCB34, MCB14 make the glass grinding faster and help the work to be completed more efficiently, which are really practical and necessary tools in your toolbox.

Features: Cutting Edge Diameter : 2.5mm / 0.1"; Shank Diameter : 2.5mm / 0.1"; Cutting Edge Length: 26mm / 1.02"; Total Length : 55mm / 2.17"; Cutting Direction: Right Hand

High Speed Steel Tool: High-speed steel straight shank tool is good for most general purpose applications, offering a combination of hardness and toughness for wear resistance

Sharp Spiral Flutes: Provide neat and smooth cuts. High cutting edge strength, fast cutting speed. Spiral groove facilitates the export of metal chip, saving time and effort in operation.

🛠【Professional Design】1/4 inch hex shank drill bit is suitable for quick replacement, suitable for most power tools, The cutting edge is hardened and honed for sharpness. all drill bits have an 82-degree angle on the point for sharp and precise countersinking.

🛠【Easy to Use】A Chatter-Free, five-flute designed with staggered cutting teeth arranged to insure free chip flow and rapid chatter-free cutting, reduces vibration for smoother drilling.

🛠【Durable & Long-life】The countersink drill bit set is made of industrial grade high carbon steel with hard titanium coating. The automatic centre punch is made of pure brass. Durability & Long service life.

Cemented Carbide Tip: 11mm twist drill bits are made of cemented carbide tip for long service life, more sharp and durable than others

Features: Milled U-flutes with deep-cut spiral provides fast material removal. Suitable for drilling in tough metal, including abrasive alloy and hardened steel

Use For: Drilling clean, accurate holes in sheet metal, steel, copper, brass, aluminum, plastic, wood, stainless steel and cast iron

Widely applicable: Portable electric drill can be used to perforate wood, plastic, rubber, soft metal, bodhi, bones, etc. The drill has a variety of different specifications, simple and convenient to use, can meet the different needs of users, and let users feel at ease to own and use.

High quality: stable precision fixture, high concentricity, tightly closed, firm and easy to smooth. The semi-automatic electric drill thickens the nut, which is firm and not easy to crack. Precise, accurate, high-efficiency, tightly gripping drill bits, 0.8-3.0mm drill bits can be clamped. Screw and semi-mechanical design, accurate positioning, saving time and effort.

Reliable quality: Our electric drills have undergone strict quality control and quality assurance, with a high safety factor and can be used with confidence. After many inspections before leaving the factory, the quality is Assurance, you can rest assured to use such tools. Can perfectly replace old or damaged ones.

HSS HIGH SPEED STEEL: The high-speed steel material these bits are made of are designed to ensure sharp and fast execution in any material for clean results while making the bit long-lasting, durable, and wear resistant.

135° SPLIT POINT DRILL TIP: The 135-degree split point increases cutting speed with self-centering with no pilot hole and prevents walking while clearing chips and particles faster.

1/2” TRI-FLAT SHANKS: The tri-flat on the shanks of these drills are constructed for tighter chucking to maximize the hold to create precision holes.

【Parameter】- Material:HSS-6542;Hardened to:65-66Hrc;Cutting Diameter:32mm/1.26inch;Total Length:150mm/5.91inch

【Material】- High speed steel 6542 is designed to ensure sharp and fast execution in metal surface for clean results;32mm cutting diameter. Good for most general purpose applications, featuring a combination of hardness and toughness for wear resistance

【Advantage】-Expanding the size range capacity of a portable drill chuck; Common flute and overall length for minimal adjustment during tool changes

【SIZE】- Cutting Edge Diameter : 7mm / 0.28"; Shank Diameter : 7mm / 0.28"; Total Length : 350mm / 13.78"

【MATERIAL】-This twist drill bit was made by High Speed Steel and the hardness HRC is 62~63 which is harder and tougher to extreme loads,not easy to break

【ADVANTAGE】- Uncoated tools feature just the base substrate without any additional treatment or coatings and are suitable for a wide range of applications

DURABLE: The center drill bit is made of high quality material, solid and stable, anti-rust and wear-resistance, which can remove chippings clearly and ensure a long time use.

6 SIZES: There are six sizes of centering drill in one package, 1.0mm, 1.5mm, 2mm, 2.5mm, 3mm, 5mm, you can choose the right size according to your needs, perfectly meets all your needs.

COMPACT: Lightweight and compact size, the weight of center drill is about 60g, so you can easily store and carry these drill bits, convenient to use.

What it does: Heavy-duty high-speed steel bridge reamers,expand or align existing holes through mild steel, alloys, aluminum, wood, plastic, fiberglass, or any material of similar hardness prior to rivet or bolt installation, Deburring and trimming of holes in structural materials

Application: Especially for steel, metal, alloy aluminum, brass, plastic, iron, nickel, copper, cast iron and other structural materials

Design: Tapered point design allows reamer bits to enter irregular overlapping holes, aligning bolt holes