Best Spiral Reduced Shank Drill Bits in 2026

HSS Titanium Coating - Classic HSS construction with titanium coating for capability and durability. The cutting edge is hardened and honed for sharpness, chatter-free design with staggered cutting teeth ensure the precise countersinking and hole smooth clean.

Flutes Form - 2 flutes form helps clear chips and debris away from the bit, decreasing friction and heat for a faster, cooler drilling process.

Quick Change - 1/4 inch hex shank fits into all power tools more easily and securely, specially for locking into quick change chuck. We also offer a quick-change adapter to better quick change.

Drills flat-bottomed and pocket holes in significantly less time than traditional Forstner bits

Features optimized ultra-sharp knife edge design specifically engineered to cut through hard and soft woods smoothly and efficiently

Easily drills high-quality flat-bottomed and pocket holes with a fine, smooth finish

M-35 Cobalt Alloy Steel Construction for Durability in abrasive materials

Jobber drill bits feature 135-Degree Split Point Tips for reduced bit walking

Straight shank works in both keyed and key-less drill chucks

5/8 HSS 3/8IN DRILL BIT

5/8 HSS 3/8IN DRILL BIT

5/8 HSS 3/8IN DRILL BIT

The item is Bosch Daredevil DSBE1012 12-inch drill bit extension

Used for power tool accessories, drill bits & accessories

The product is manufactured in China

Round shank designed for rotary and percussion hammer drilling through block, brick, stone, concrete and marble, Swift Cut (Registered Trademark)

Tungsten Carbide reinforced head - precision ground

Induction-hardened body ensures straightness and strength, sandblasted finish

HIGH SPEED STEEL: These metal drill bits for steel are made of high speed stainless steel and is designed to ensure sharp and fast execution in any material leaving clean results. This 8-piece drill-bit set is capable of drilling through plastic, copper, stainless steel, and other surfaces.

LARGE DRILL BIT SET: Heat treated carbon steel with a black enamel coating is durable and can withstand heavy duty operation for a long tool life.

PRECISION DRILLING SET: Bit is precision ground with geometry of 135-degree split point for quick self-centering penetration and an accurate start that prevents walking and clears chips and particles faster.

Accuracy & Longevity - 135 degree split point starts drilling immediately requires less force and eliminates “walking” across the working surface. Tapered web provides strength, durability, and reduces breakage.

Three-Flat Design - Three flats on shank eliminate bit spinning in chuck. Our proprietary parabolic flute design brings optimal chip removal which reduces heat build-up.

Wide Range of Uses - Drill bits are built for general purpose applications, such as steel/copper/aluminum/zinc alloy/wood/plastics. Also, it's ideal for DIY projects and home maintenance. Durable and reliable quality.

Durable Construction - HSS material with black and gold coating increases lubricity, provides corrosion protection, and increases durability. Ensures longer tool life in multiple working conditions. Tapered web provides strength, durability and reduces breakage.

No Center Punch is Needed - 135° split point design for fast penetration with less pressure. Twist drill bit kit will not "Walk" or "Wander".

Parabolic Flute - Parabolic flute for better chip removal and reduced heat build-up.

Premium cobalt high speed steel construction for proven capability and durability to drill holes in wood, plastic, aluminum, copper, stainless, sheet metals and many other types of materials

Superior gold titanium and black nitride dual coating finish holds up lubricant better for smoother drilling, and is 80% more durable and corrosion resistant than regular black enamel finish

135° Split point design at tip increases cutting speed with self-centering feature and prevents drill walking or wobbling

[Specifications and Packaging]: 1 Pc reduced-shank drill bit and 1 pc plastic tube.Include Size:1".

[Fitment]: Hss drill bit set for metal/ wood/ plastic. Suitable for home DIY, and general building/engineering/woodworking use.

[Material]: Metal drill bit used high speed steel M2 black and gold, resists corrosion, ensures outstanding durability, sharpness and capability, reduces the friction and runs cooler.

High Quality Material - High Speed Steel M2 Black and Gold, resists corrosion, ensures outstanding durability, sharpness and capability, reduces the friction and runs cooler.

Black and Gold Oxide Finish - Premium gold titanium and black nitride dual coating can apply lubricant better for smoother drilling and is more durable and corrosion resistant than the regular black surface.

135-degree & Split Point - Increases cutting speed with self-centering and prevents walking, clears chips and particles faster. The split point tip can increase the wear resistance. 135-degree penetrates hard material without a pilot hole and produces small chips to reduce clogging.

High Speed Steel tool - 24mm cutting diameter. Good for most general purpose applications, featuring a combination of hardness and toughness for wear resistance

Reduced Shank - Expanding the size range capacity of a portable drill chuck. Common flute and overall length for minimal adjustment during tool changes

Black Oxide Finish - Black oxide treatment adds lubricity. Small pockets on the surface of the tool that act to hold coolant near the cutting edge

Durable Construction - HSS material with black and gold coating increases lubricity, supplies corrosion protection, and increases durability. Ensures longer tool life in multiple working conditions. Tapered web provides strength, durability, and reduces breakage.

Twist Design & Performance- Parabolic flute for better chip removal and reduced heat build-up. Tapered web for greater strength and durability.

Accuracy - 135° split point tip engineered for a no-skip, clean and accurate start. For use in a variety of drilling applications including: wood, plastics and light-gauge metal.

Brad Point to Start Holes Cleanly

Sharp cutting edge for smooth holes

Reduced shank fits 3/8-Inch and larger drills and drill presses

Titanium Nitride Coated-coated nitride drill bits last longer and feature a cutting edge that stays sharp

135° split-point tip starts drilling immediately and helps eliminate walking

IRWIN drill bits are great for repetitive metal drilling with portable drills and for use in stationary drill presses

Total Size: 155 x 17mm/6.1 x 0.67 inch (L*Max.D)

Shank Diameter: 1/2 inch; Material: High Speed Steel

Milled & polished flutes ensure chips move smoothly.

DRILL-BIT SET: Our Silver and Deming Drill-Bit Set is professionally built for personal or industrial use. This 8-piece drill-bit set is capable of drilling through plastic, copper, stainless steel, and other surfaces.

HEAVY-DUTY DRILL BITS: With a premium high-speed steel construction, these drill bits for metal, plastic, and wood have a unique black-and-gold dual finish to hold lubricant for smoother drilling while providing maximum corrosion resistance.

PRECISION DRILLING SET: Each drill bit has a 135-degree split-point design that increases cutting speed and makes any drill fast and efficient. The self-centering feature helps prevent walking or wobbling on the bit while in use.

High Speed Steel tool - 26mm cutting diameter. Good for most general purpose applications, featuring a combination of hardness and toughness for wear resistance

Reduced Shank - Expanding the size range capacity of a portable drill chuck. Common flute and overall length for minimal adjustment during tool changes

Black Oxide Finish - Black oxide treatment adds lubricity. Small pockets on the surface of the tool that act to hold coolant near the cutting edge

High Speed Steel tool - 32mm cutting diameter. Good for most general purpose applications, featuring a combination of hardness and toughness for wear resistance

Reduced Shank - Expanding the size range capacity of a portable drill chuck. Common flute and overall length for minimal adjustment during tool changes

Black Oxide Finish - Black oxide treatment adds lubricity. Small pockets on the surface of the tool that act to hold coolant near the cutting edge

Each drill bit is 6 inch long, with a 1/2" shank

【High Speed Steel tool】- 15mm / 0.59-inch cutting diameter. Cutting Edge Length: 70mm / 2.76-inch;Overall Length: 155mm / 6.1-inch. Good for most general purpose applications, featuring a combination of hardness and toughness for wear resistance.

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

【Black Oxide Finish】- Black oxide treatment adds lubricity. Small pockets on the surface of the tool that act to hold coolant near the cutting edge

【Specification】13 cobalt hexagonal shank bits, including 1.5, 2.0, 2.5, 3.0, 3.2, 3.5, 4.0, 4.5, 4.8, 5.0, 5.5, 6.0, 6.5 mm, with 1/4 hexagonal shank.

【Advantages】The hexagonal handle specially made for quick replacement of drill bits is an upgraded version. Compared with the ordinary hexagonal handle, it shows excellent performance, prevents the drill bit from peeling off the hexagonal handle, and effectively keeps the hexagonal handle locked during impact drilling. Cobalt drill bit is more durable than titanium drill bit.

【Complete grinding process and 135 ° points】 The fully ground spiral groove blowdown waste quickly reduces friction and heat, thus providing faster, cooler and more efficient drilling performance; 135 ° split point with straight handle can prevent slipping and make drilling stable and accurate. No center punch is required.

POINT DESIGN: 135° split point design increases cutting speed with self-centering feature and prevents drill bit walking or wobbling on working surface.

REDUCED SHANK with THREE FLATS: 1/2" reduced shank drill bit with tri-flat is designed to eliminate drill bits spinning in the chuck and ensures grip. Superior black oxide finish offers great wear resistance.

WIDE FLUTE: Parabolic flute design improves chips removal and prolongs drill bits life while drilling in metal and wood.

【TITANIUM | HIGH-SPEED STEEL】: Twist Drill Bits, Jobber Length,Classic HSS Construction With Titanium Coating For Proven Capability And Durability.

【STRENGTH & DURABILITY】: Made With HSS 4341, Rock wall Hardness Level HRC 60-62.

【5PCS】:Diameter 1/2 inch, Total Length 6 inch, Working Length 4-1/2 inch.

Forged and manufactured from high-speed steel in Austria

For use with power tools on softwoods and hardwoods

Includes 16 Black Shark Forstner Drill Bits: 1/4, 3/8, 1/2, 5/8, 3/4, 7/8, 1, 1-1/8, 1-1/4, 1-3/8, 1-1/2, 2-inch, 15, 20, 30, and 35mm in custom wooden box

Set of 33 reduced shank drill bits includes inch sizes 1/2" through 1" in 1/64" increments

High-speed steel (HSS) provides hardness for wear resistance

Black oxide finish reduces bit wear while promoting chip and coolant flow on ferrous material

【Size & Package】Cutting Edge Diameter : 15mm / 0.9"; Shank Diameter : 1/2"; Cutting Edge Length: 78mm / 3.07"; Total Length : 150mm / 5.9"; Package includes 1PC 15mm reduced shank twist drill.

【Black Oxide Surface】Black oxide treatment adds lubricity and creates small pockets on the surface of the tool that act to hold coolant near the cutting edge. The surface coating can also better protect the reduced shank drill bit sets from corrosion and expand their life.

【Sharper & Hard】Made of High Speed Steel 6542 material, the reduced shank drill bit is hard enough, anti-bending and will not fracture easily. The sharp cutting edge and spiral flutes promote faster as well as preciser drilling. Helping you work more efficiently and get rid of glitches or scrap.

Speed helix design penetrates 3X faster than standard bits

Triple tempered black oxide coated bits last 50-percent longer than regular high speed steel

135 Degree split point starts on contact with no walking or skating and no center punch is required

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.