Best Inch Twist Drill Bits in 2026

DEWALT 21-pack black oxide twist drill bit set is ideal for general-purpose drilling materials like metal, hardwood, softwood, PVC and fiberglass

Parabolic flute design increases chip ejection in metal and wood drilling applications

Black oxide coating helps resist corrosion and increase durability, so your drill bits last longer

【Capability & Durability】 HSS construction enables drill bits of this impact drill bit set with high capability, durability and functional ability. The premium titanium finish improves surface hardness, rust and wear resistance. Durable titanium hex drill bit set that penetrates hard materials with ease and lasts a long time.

【Withstand Heavy Impact & Quick Change】 The 1/4 inch hex shank enables the titanium drill bit set to handle high torque transmissions and heavy impact. A dependable impact drill bit set to get the job done. These hex drill bits fit into quick change chuck system for rapid change of cutting tools.

【Fast Drilling】 The 135-degree split point tip prevents the titanium impact drill bit from walking for easy starts on contact. Precision fully ground parabolic flute form helps hex drill bits produce rapid chip removal to decrease friction and heat build-up. Durable impact hex shank drill bit set with sharp cutting edges that cut like butter on wood/metal.

Titanium Nitride coating for maximum life

Parabolic flute design improves chip ejection while drilling

Extra hard titanium coating for maximum service life

5/8 HSS 3/8IN DRILL BIT

5/8 HSS 3/8IN DRILL BIT

5/8 HSS 3/8IN DRILL BIT

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.

HSS Titanium Coating -Titanium coating offers drill bit great durability and can prolong drill bit life 3 times longer than drill bits without coating.

Easy Cut Point - Jefe Hex 135 degree split easy cut point tip starts drilling easily with less force and eliminates “walking” across the working surface. And the modified parabolic flute forms smaller chips and clears debris easily. This design keeps the bit cooler which prolongs drill bit life.

Quick Change and Impact Rated - Hex shank fits all power tools and impact drivers. No need to bring two drivers. Jefe Hex drill bits are convenient, firm and more secure. Jefe Hex is ideal for high torque drivers.

Strength & Hardness - Tapered web enhances strength and durability. Titanium coating adds lubricity and protection from abrasion. Jefe Hex drill bit with enhanced parabolic flutes promotes chip removal which decreases friction and heat.

Hex Shank - Quick change hex shank fits easily into all power tools and Impact drivers. Solid bonding technology manufacturing eliminates radial runout and improves concentrically. High torque, impact-rated accuracy.

Easy Cut Point - The 135° easy cut split point ensures a precision start, eliminates walking on the working surface which provides clean and accurate holes. No need for a center punch. More effective for drilling on curved surfaces.

【Premium HSS Titanium Coating】High speed steel (HSS) with titanium coating gives Jefe Hex drill bit great durability and prolongs 3 times longer life than drill bits without coating.

【Easy Cut Split Point】Jefe Hex Easy Cut Point design makes drilling easy with less pressure and prevents drill bit walking on the working surface. Fully ground modified parabolic flute design clears chips quickly, decreases friction and heat damage. Tapered web provides durability and reduces breakage.

【Quick Change】1/4" (6.4mm) hex shank fits into standard power tools and impact drivers. Jefe Hex drill bit’s solid bonding technology manufacturing eliminates radial runout and improves concentricity. High torque, impact-rated accuracy.

Easy Cut Point - The 135° easy-cut split point ensures a precision start and prevents walking on working surface. A specially designed parabolic flute forms smaller chips and clears debris easily. This design keeps the bit cooler which prolongs drill bit life.

Quick Change - Hex shank drill bit fits into all power tools easily and securely, especially for locking into quick change chuck. Solid bonding technology manufacturing eliminates radial runout and improves concentricity. High torque, Impact-rated.

Strength - The modified tapered web strengthens the drill bit while promoting easy chip removal. Titanium coating provides lubricity. This combination prolongs drill life up to three times than a normal drill.

★ KIT INCLUDES - 2 x 1/16", 2 x 5/64”, 2 x 3/32”, 1 x 7/64”, 1 x 1/8", 1 x 9/64”, 1 x 5/32”, 1 x 11/64”, 1 x 3/16”, 1 x 1/4", 1 x 5/16”, 1 x 3/8"

★ DRILL BITS - 135°split point drill bit with 2 cutting edges and 1 flute for improved drilling speed while providing buffer to lengthen the longevity of the drill bit

★ CHIP CLEARING - A parabolic flute form helps clear chips and debris away from the bit, decreasing friction and heat for a faster, cooler drilling process

【Package & Size】 10PCS 9/64" Hex Drill Bits in one package, all drill bits are kept in a strong and professional plastic case with hanging hole which is convenient for storage and pick-up.

【Wide Applications】 VALYRIANTOOL Hex drill bit sets are built for general purpose applications, such as DIY projects, home maintenance and MRO (Maintenance, Repair and Operations). Working materials include mild steel, copper, aluminum, zinc alloy, cast iron, wood and plastics.

【HSS Black & Gold Oxide】High speed steel (HSS) with black gold surface treatment gives VALYRIANTOOL Hex drill bits great durability and prolongs 3 times longer life than ordinary drill bits without coating.

Parabolic flute design offers enhanced chip removal, coolant flow to the drill point, and heat dissipation

Long length drill bits, also called taper length, have longer flutes and overall lengths than jobber drill bits

135-degree radius split-point is self-centering, reduces walking, good for hard material, and reduces pressure on cutting edges

[Specifications]- Twist Drill Bits Diameter: 3mm / 0.12-inch; Drill Bit Length: 73mm / 2.87-inch; Shank Diameter: 3mm / 0.12-inch; Total Length: 120mm / 4.72-inch; 1 x Parabolic Flute Drill Bit

[Strength and Hardness]- Made of M35 HSS(High Speed Steel) cobalt steel. With high hardness and red hardness, wear-resistant, and fast drilling performance.

[Surface Treatment]- The gold oxide surface treatment increases the hardness of the drill bit, provides longer drilling life and better drilling performance, and is more durable and corrosion resistant than uncoated drill bits.