Best Inch Twist Drill Bits in 2026

Saves time: The HSS Twist Drill Bit PointTeQ with reduced shank enables you to drill through metal quickly thanks to the special design of the drill bit tip

High durability: The increased speed of the drill bit means less heat is built up, reducing wear

Precision work: The self-centering PointTeq tip design prevents slipping and allows an easy and efficient start

COBALT STEEL - Manufactured from M35 cobalt steel, with molybdenum and cobalt added to creates a hardened alloy, measuring Rockwell hardness up to 67, extremely heat resistant; for much faster cutting and extra longer life span, with up to twelve times when compared with an average HSS drill bit.

NO CENTER PUNCH NEEDED - The 135° Quick-Cut points are self-centering and penetrate quickly with less pressure. Will not "walk" or "wander". Straight shank allows for firmly holding and accurate centering, fit for standard drill chucks and regular round collet chucks. Must be used and operated at proper RPMs for maximum efficiency

13PC METRIC BITS - The set includes 13pcs of M35 cobalt steel twist drill bits: 1.5mm, 2mm, 2.5mm, 3mm, 3.2mm, 3.5mm, 4mm, 4.5mm, 4.8mm, 5mm, 5.5mm, 6mm, 6.5mm. Well organized in a plastic indexed storage case for easy transport to your worksite.

Convenient Size Variety: This 29-piece bit set includes everything you need for a user-friendly experience that suits all your needs. The set comes with: 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 11/64", 3/16", 13/64", 7/32", 15/64", 1/4", 17/64", 9/32", 19/64", 5/16", 21/64", 11/32", 23/64", 3/8", 25/64", 13/32", 27/64", 7/16", 29/64", 15/32", 31/64", 1/2" bits.

A Must For Professionals: The CaRoller drill bits sets are an excellent choice for professionals as well as DIY enthusiasts, enjoying superior durability and including various sizes that go well with your multiple needs.

Heavy Duty Construction: This wood drill bit set is made with premium grade, highly durable materials, a combination of W4 high speed steel, amber coating and black oxide finish which ensures long-lasting use and superior wear resistance!

HIGH QUALITY MATERIAL: 5% Cobalt High Speed Steel M35 provide extended tool life compared to ordinary drill bits. Durable and strong

TWIST DESIGN & PERFORMANCE: PRECISE 135°SPLIT POINT, gold oxide finish and round straight shanks. Prevent walking, clear chips and particles faster.Produced by precision fully ground which ensures chips move smoothly.

PROFESSIONAL & WIDELY USE: M35 Cobalt HSS is more suitable for hardened material. Particularly successful in cutting through hard metals such as stainless steel, cast iron, high temperature alloy, titanium alloy, hard plastics and woods, and also can be used for softer materials.

DRILLING AIN’T EASY: Drilling quickly and accurately into different materials requires choosing the appropriate drill bit type. Get it done right with The Hi-Spec Multi Metric Drill Bit Set. The perfect complement for those everyday drilling jobs in wood, plastics, metal, drywall, masonry, concrete and brick

78 HSS BITS: High-Speed Steel (HSS4241) round-shank twist drill bits, stronger than normal high-carbon steel, for most metals, wood, drywall and plastics. Titanium coated for wear resistance and reduced friction. Sizes 1/16, 5/64, 1/8, 5/32, 3/16, 1/4, 5/16, 3/8”

26 BRAD POINT WOOD BITS: Their sharpened edges easily cut and churn out wood, drywall and plastics. Also known as spur point bits, piercing tips allows for non-slipping and accurate starts. Sizes 5/32, 3/16, 15/64, 5/16, 3/8"

diameter 6mm 1/4 Inch,diamond length 8mm,Round shank

Multi-purpose drilling for granite & marble, masonry, concrete, tile/ceramic, glass, hard plastic,All-Purpose Drilling

Wax inside for cooling,our Diamond Tipped Drill Bits have wax cores built-in for Cooling and Lubrication.Special Designed with Hole and Groove in the Side of Drill Bit for Removing Stone Chips

【M35 Cobalt High Speed Steel】Industry grade M35 high speed steel drill bit set, much harder than HSS used in other similar drill bits set. These drill bits contain 5% Cobalt, which increases wear-resistance and durability.

【Most Commonly-Used 20 Sizes】A complete combo set of 31 jobber length industrial drill bits for metal drilling (1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 11/64", 3/16", 13/64",7/32",15/64",1/4", 17/64", 9/32", 5/16", 11/32", 3/8", 7/16", 1/2") . They fit the majority of power drill currently on the market and comes with a portable plastic case for easy storage and organization.

【Precise & Efficient Drilling Performance】✔ Fully Ground spiral groove design clears particles quickly, decreases friction and heat for a faster and cooler drilling performance. ✔ 135° Split Point with round straight shank prevents walking and makes drilling precise and faster. No center punch is needed.

Cobalt drill bits: Classic 5% Cobalt M35 High Speed Steel construction with Titanium Coating for proven capability and durability.

Hardness: 5% Cobalt drill bits’ Rock wall Hardness Level HRC 65-66.

Package & Size: 10 Pieces drill bits in a plastic bag, Diameter 9/64 inch, Total length 2-7/8 inch, Working length 1-3/4 inch.

20PCS,9/32" Inch HSS Jobber Cobalt Twist Drill Bits,ideal for drilling on mild steel, copper, Aluminum, Zinc alloy etc.

High Quality Material- High Speed Steel Cobalt -M 35 Cobalt Steel Best Material.

High Efficiency In Drilling Metals, and Stainless Steel.

High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance

Black oxide treatment adds lubricity and creates small pockets on the surface of the tool that act to hold coolant near the cutting edge

Round shanks allow use with a wide variety of toolholding systems

COBALT STEEL - Manufactured from M35 grade cobalt steel, with molybdenum and cobalt added to creates a hardened alloy, measuring Rockwell hardness up to 67, for much faster cutting and extra longer life span, ideal for repeated drilling in metalworking.

FOR METALWORKING - Particularly successful in cutting through hard metals(hardness less than HRC38°) such as stainless steel and cast iron, although they can be used for softer materials like copper and aluminium, too. Not for hardened steel / high carbon steel. Try to adjust the RPM when it fails to penetrate.

SELF CENTERING - The 135°quick-cut pilot split points are self-centering and can penetrate quickly with less pressure. The bits will not "walk" or "wander". Straight shank allows for firmly holding and accurate centering, fit for standard drill chucks and regular round collet chucks.

Features: Cutting Edge Diameter : 12.5mm / 0.49"; Shank Diameter : 12.5mm / 0.49"; Cutting Edge Length: 102mm / 4.02"; Total Length : 150mm / 5.91"; 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.

Features: Cutting Edge Diameter : 8mm / 0.31"; Shank Diameter : 8mm / 0.31"; Cutting Edge Length: 75mm / 2.95"; Total Length : 115mm / 0.59"; 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.

COBALT STEEL - Manufactured from M35 grade cobalt steel, with molybdenum and cobalt added to creates a hardened alloy, measuring Rockwell hardness up to 67, for much faster cutting and extra longer life span, ideal for repeated drilling in metalworking.

FOR METALWORKING - Particularly successful in cutting through hard metals(hardness less than HRC38°) such as stainless steel and cast iron, although they can be used for softer materials like copper and aluminium, too. Not for hardened steel / high carbon steel. Try to adjust the RPM when it fails to penetrate.

SELF CENTERING - The 135° quick-cut pilot split points are self-centering and can penetrate quickly with less pressure. The bits will not "walk" or "wander". Straight shank allows for firmly holding and accurate centering, fit for standard drill chucks and regular round collet chucks.

🔨【VARIOUS SIZES】: 29 sets of drill bits include: 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 11/64" , 3/16", 13/64", 7/32", 15/64", 1/4", 17/64", 9/32", 19/64", 5/16", 21/64" , 11/32", 23/64", 3/8", 25/64", 13/32", 27/64", 7/16", 29/64", 15/32", 31/64", 1/2", can almost meet the needs of your daily engineering

🔨【M35 Cobalt Drill Bit】: The M35 cobalt drill is a durable, sharp and strong drill. For excellent cutting performance, the inserts are hardened and polished for sharpness and precise cuts without wobbling.

🔨【135 SPLIT POINTS】: The Cobalt drill bit is a 135° split round straight shank to prevent slippage and make the drilling process more efficient. The 135-degree pointed design increases cutting speed and accelerates the removal of chips and particles.

✅【5% COBALT TWIST DRILL BITS SET】Made from M35 Cobalt Steel with Molybdenum and Cobalt added to form a hardened alloy, can measure up to 67 Rockwell hardness, cut faster, last longer, and last longer than normal HSS drill bits 12 times.

✅【19PCS METRIC DIRLL BITS SET】The set includes 19pcs of M35 cobalt steel twist drill bits: 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 6.5mm, 7 mm, 7.5mm, 8 mm, 8.5mm, 9 mm, 9.5mm, 10 mm. Organized in a sturdy plastic storage case for easy transport to your workplace.

✅【TWIST DESIGN AND PERFORMANCE】Precise 135° SPLIT Point, Gold Oxide Surface and Round Straight Shank. Prevents walking and removes chips and particles faster. Precision fully ground to ensure smooth chip movement.

Product Information: 10 drill bits: Each kit contains a total of ten drill bits in the same size

Accurate and Neat: 135°Quick-Cut points are self-centering and penetrate quickly with less pressure. Will not "walk" or "wander"

Excellent Performance: Bits are extremely heat resistant. Straight shank allows for firmly holding and accurate centering, fit for standard drill chucks and regular round collet chucks

Perfect Drill Bits: Precision grinding process for a clean surface and high grinding accuracy. Universal round drill shank, widely applicable of tool holding systems and tightly clamped

135° Split Point & Twist Design: The 135 degree fast cutting point is automatically centered and penetrates quickly with less pressure, reducing walking, fully ground drill bit with sharp and durable cutting edge. Twist design for clear chips faster

Enhanced M35 Alloy Material: These drill bits contain 5% Cobalt alloy steel, which increases wear resistance and durability. Industry grade 6542 high speed steel drill bit set, harder than 4241 HSS used in other similar drill bits set

High Quality Material - High Speed Steel M35 (Cobalt 5%) provide extended tool life compared to ordinary drill bits when drilling hard materials.

Characteristics - 135° split point with round straight shank, self-centering prevent walking, make drilling precise and faster. Fully Ground twist design helps clear particles faster, decreases friction and heat for a cooler drilling performance.

Widely Used - M35 Cobalt High Speed Steel is more suitable for tough, high tensile strength material. Particularly successful in cutting harden metals such as stainless steel, cast iron, high temperature alloy, titanium alloy, hard plastics and woods, and it also can be used for softer materials.

COBALT GOLD OXIDE JOBBER DRILL BITS: 29 PCS high speed steel with 5% cobalt drill bit set resists high heat abrasion while drilling. Cobalt steel provides extended tool life compared to high-speed steel drill bits, and maintains the tool's toughness and hardness in high drilling temperatures. A gold oxide finish acts as a lubricant and provides wear resistance.

ROUND AND PORTABLE CASE: Say goodbye to constant losing or misplacing your drill bits! Jefe Hex cobalt drill bit set for metal comes with an ergonomic and portable round carrying case with built-in clip. The case can be easily attached to your tool belt keeping your bits within immediate reach!

135 DEGREES SPLIT POINT TWIST DRILL BITS: A self-centering 135° split point drill tip penetrates hard materials without a pilot hole and keeps sharp without walking on the surface compared to a 118-degree point. Proper twist and flute design clears chips and particles fast. Drill bits larger than 3/8" have 3/8” reduced shank for majority drills in the market. Drill bits smaller than 3/8" have three-flat shanks that reduce spinning in chuck.

[ Use The Drill Bits Longer ] Every Twist Drill Bit has classic High Speed Steel (HSS) construction with a titanium coating that provides ultimate durability and longer drill bit service life through multiple uses without deformation.

[ Drill Precise Holes] The cutting edge of each titanium drilll bit is hardened and honed for sharpness. It also features a chatter-free design with staggered cutting teeth to ensure precise countersinking and clean, smooth holes.

[ Have Every Size You Need ] This universal drill bit set covers sizes: 28 x 3/64", 27 x 5/64", 20 x 1/8", 10 x 5/32", 12 x 3/16", 8 x 15/64", 8 x 9/32", 3 x 5/16", 2 x 23/64", 1 x 1/2", 27 x 1/16", 27 x 3/32", 20 x 9/64", 10 x 11/64", 10 x 7/32", 12 x 1/4", 2 x 19/64", 2 x 21/64", 1 x 3/8".

【Drill Bit Set】：Includes1/16" 2pc,5/64" 1pc ,3/32" 2pc,7/64" 1pc,1/8" 2pc ,9/64" 1pc, 5/32" 1pc, 3/16" 1pc, 7/32" 1pc, 1/4" 1pc, 5/16" 1pc, 3/8" 1pc. This 15pcs jobber length drill bit set with plastic storage case meets all your needs

【Cobalt 5% HSS】: High-Speed Steel M35(Cobalt 5%)cobalt drill bit set can effectively drill tough and high tensile materials. The M35 drill bit is especially suitable for cutting hard metals, such as stainless steel, cast iron, superalloys, titanium alloys, rigid plastics, and wood, It can also be used in soft materials

【Characteristics】: The metal drill bit is 135°split point with a round straight shank, self-centering prevents walking, and makes drilling precise and faster. Double back Angle process and full grinding process is adopted fully ground process twist design helps clear particles faster, decreases friction and heat for a cooler drilling performance

UNIQUE 3X FLUTE DESIGN - Lichamp three flute patent design drill bit clears chips and particles faster, provide you with more efficient drilling experience.

4X LIFESPAN MATERIAL - Made from industrial grade M35 high-speed steel with 5% cobalt provides hardness for wear resistance, withstands max 1100 degreeF.

MULTIPLE APPLICATION - Ideal for drilling in heavy-duty tough metal, including hard abrasive alloy metal, hardened stainless steel or cast iron.

EXTRA LONG LENGTH & 2 TYPE SHANK: Extra long 300mm body provides better stability and balance during quick operation to ensure position is intact. Flute length is 180mm with ROUND shank and REDUCED shank.

HIGH QUALITY MATERIAL: Classic Carbon Steel Material for fast cutting against tough wood material. High hardness, offer superior cutting power and durable.

FULL SET OF STANDARD SIZE: With the drill bits we offered, you can process 7 different diameter holes, ( Round shank| 1/8'', 3/16'', 1/4'', 5/16'', 3/8'' Reduced Shank| 7/16'', 1/2'' ), which meet your different needs perfectly.

Specification: Shank Type: Round Shank; Tool Flute Type: Spiral; Twist Drill Bits Diameter: 0.5mm-2.3mm; Shank Diameter: 2.35mm / 0.09-inch; Total Length: 45mm

Material: Made of high-speed steel, with high hardness and stable operation. The drill bit is titanium coated, which has higher wear resistance and lower friction coefficient. Not easy to accumulate chips and long service life.

Cooling: Adapt to several kinds of cooling conditions, for example oil mist, water, oil, air cooling.

【Titanium Drill Bit Set】: Include Includes 16pcs 1/16", 16pcs 5/64", 15pcs 3/32", 10pcs 7/64", 10pcs 1/8", 8pcs 9/64", 8pcs 5/32", 3pcs 11/64", 3pcs 3/16", 2pcs 15/64", 2pcs 7/32", 2pcs 1/4", 2pcs 5/16", 2pcs 3/8" Various sizes of drill bits make you fully qualified for various tasks

【Material】: High-Speed Steel Titanium drill bit set can effectively drill tough and high tensile materials. The metal drill bit is especially suitable for cutting hard metals, such as stainless steel, cast iron, superalloys, titanium alloys, rigid plastics, and wood, It can also be used in soft materials

【Characteristics】: The jobber drill bit is 118°split point with a round straight shank, self-centering prevents walking, and makes drilling precise and faster. Spiral design and full grinding process is adopted fully ground process twist design helps clear particles faster, and decreases friction and heat for a cooler drilling performance

12 PIECE BRAD POINT DRILL BIT SET - In the following sizes: 1/8" (2.5 INCH LENGTH - 2 INCLUDED), 5/32 (3 INCH LENGTH), 3/16" (3.5 INCH LENGTH), 1/4" (4 INCH LENGTH - 2 INCLUDED), 5/16" (4.5 INCH LENGTH), 3/8 (4.5 INCH LENGTH - 2 INCLUDED), 7/16" (5.5 INCH LENGTH), and 1/2" (6" LENGTH - 2 INCLUDED)

CENTER POINT - Brad point tip provides precision accuracy for starting your drilling hole

STORAGE CASE INCLUDED - Keeps Your Brad Point Drill Bits Safe & Organized in a Rust-Free Hard Plastic Container

MAKE SMOOTHLY CUT HOLES: Use the ABN 115-Piece Titanium Drill Bit Set for Metal to drill into hard plastics, wood, alloy steel, nonferrous metal; Prevents walking and creates sharp, clean cuts while running cooler, drilling smoother, and lasting longer than standard bits

USE YOUR EXISTING DRILL: Angled tip and round shank to use with your existing chucked drill; Ensure that you use a chuck or adapter with ample grip

BUILT TO LAST: High speed steel (HSS) coated with titanium to prevent dulling from overheating and reduce drag, heat, and friction; We recommend using cutting lubricant (not included)

Material: Carbon steel; 1 Set Include 8 Piece(Diameter:3mm 4mm 5mm 6mm 7mm 8mm 9mm 10mm)

3-10mm set of brad point drill bits, Wood drill bits, Spiral twist drill mill 8 Piece, straight round shank, Edge sharpness

Suitable for soft wood, hard wood, Beech, Walnut, Elm, Nylon, PU, Acrylic

SIZE INCLUDED: Drill Set 99 Pcs include 1/16" 16 Piece, 5/64" 16 Piece, 3/32" 15 Piece, 7/64" 10 Piece, 1/8" 10 Piece, 9/64“ 8 Piece, 5/32" 8 Piece, 11/64" 3 Piece, 3/16" 3 Piece, 13/64" 2 Piece, 7/32" 2 Piece, 1/4" 2 Piece ,5/16 2 Piece, 3/8" 2 Piece. which can make your work easier.

STRENGTH & DURABILITY: Made with HSS , Rockwall Hardness Level. Each of our HSS drill b has been coated in Titanium as it is well reported to resist heat and friction giving you a quality finish and a longer lasting drill bit. Quality is as good as any major brand such as drill bit set.

METAL STORAGE BOX: Your order comes in a handy metal box with handle for all 99 bits, each drill bits have its own clearly labelled designated storage spot which makes it the best craftsman drill bit kit.