Best Inch Twist Drill Bits in 2026

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

25PC METRIC BITS - The set includes 25pcs 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, 7mm, 7.5mm, 8mm, 8.5mm, 9mm, 9.5mm, 10mm, 10.5mm, 11mm, 11.5mm, 12mm, 12.5mm, 13mm. Well organized in a plastic indexed storage case for easy transport to your worksite.

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"

Premium M42 8% Cobalt Steel ,68-70 HRC (Rockwell Hardness Scale) ,Usually Give the Best Heat,Wear and Chip Resistance and Long Tool Life.

3 Steps Desigh for Cutting through Stainless Steel,Hard Metals,Aluminum,Plastic.

This Cobalt Drill Bit is Typically Capable of Running Three to Five Times Faster.Despite the Higher Price,the Cost Per Hole When Using Cobalt Drill Bit Will be the Lowest,Since It Can Produce So Many More Holes.

PREMIUM MATERIAL: Manufactured from 4241 high speed steel for strength and durability

STORAGE: Supplied in a plastic storage box for easy storage and transportation

Widely USED: The 135° fast cutting point is automatically centered and penetrates quickly with less pressure,The drill kit meets all your requirements, including all common size specifications for Ideal Drilling in Wood/Cast Iron/Aluminum Alloy/Plastic/Fiberglass

Cobalt Steel - Manufactured From M35 5% Cobalt Steel, With Molybdenum And Cobalt Added To Creates A Hardened Alloy, Measuring Rockwell Hardness Up To 65, For Much Faster Cutting And Extra Longer Life Span, With Up To 10 Times When Compared with an Average HSS Drill Bit.

HSS Titanium Coating - Classic HSS Construction With Titanium Coating For Capability And Durability. The Cutting Edge Is Hardened And Honed For Sharpness.

Flutes Form - 2 Flutes Form Helps Clear Chips And Debris Away From The Bit, Decreasing Friction And Heat For A Faster, Cooler Drilling Process, Chatter-Free Design With Staggered Cutting Teeth Ensure The Precise Countersinking And Hole Smooth Clean.

✅【5% COBALT TWIST DRILL BITS SET】25pcs drill bit (Iron box 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.

✅【25PCS METRIC DIRLL BITS SET】The set includes 25pcs 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, 10.5mm,11mm,11.5mm,12mm,12.5mm,13mm 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.

Great product and very good quality. Made from M35 Hight-speed Steel and 5% Cobalt.Size:7.0mm,Total lengh:4.33inch,Work lengh:2.75inch

The blades are very sharp and they drill into metal fast.Including Steels,Cast Iron ,Copper,Galvanized Pipe,Aluminum Alloy,Wood, Plastic and Other Hard Metals.If drilling hard metal, Highly recommended use drilling press and control RPM.Not for Glass or Ceramic Materials.

Full-grinding Nitriding,Good Wear resistance,Durable,Spiral groove design, well chip removal performance.135 Tip & Twist Design,Increases cutting speed with self-centering and prevents walking.

19pcs of Metric Twist Drill Bits - 1.0mm, 1.5mm, 2.0mm, 2.5mm, 3.0mm, 3.5mm, 4.0mm, 4.5mm, 5.0mm, 5.5mm, 6.0mm, 6.5mm, 7.0mm, 7.5mm, 8.0mm, 8.5mm, 9.0mm, 9.5mm, 10.0mm. Enough for daily use.

HSS 4241 - Made of high speed steel 4241 and coated with titanium for rust prevention.

Straight Shank and 118 Degree Point Angle - Straight shank for standard drill chucks and collet chuck to hold firmly, assuring accurate centering; Helical flute for swarf to easily get out; standard 118-degree point configuration is ideal for general purpose drilling applications.

Material : Diameter Size of Micro HSS Drill Bit Set is 2.5mm.

Package Include: 10 pcs metal drill bits fit for the majority of power drill currently on the market and come with a portable plastic case for easy storage and organization.

Quality Material: Cobalt drill bit set adopts HSS-4341, which is durable, strong and practical, long service life, heat resistant and wear-resistant; The cutting edge of drill bit is hardened and honed, cutting precision, no shaking.

PREMIUM QUALITY - These 3 point drill bits are made of high carbon steel,which High hardness and edge sharpness for fast cutting, superior cutting power and longer useful life.

BRAD POINT DESIGN - The tip of these brad point designed to prevents drill bit from skipping or walking when without mark,which allows you pinpoint the mark and can penetrate surface quickly. Extra-wide flutes deliver effective and fast chip removal with less effort during drilling.

MEET YOUR NEED - With the 3-10mm wood drill bits we offered, you can process 8 different diameter holes(1/8", 5/32", 3/16", 1/4", 9/32", 5/16", 11/32", 3/8") , which meet your different drilling requirement.

Drill bits include: 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, 11.5, 12, 12.5, 13 mm

Quality High Speed Steel M2 provides all drills power cutting, impressive performace and long tool life

Precision fully ground edges and flutes ensure fast drilling, excellent chips moving smoothly and ultimate accuracy

Sharp & Wear-Resistant: These drill bits are made of 4241 high speed steel with titanium coating for proven capability and durability.

Multi-Purpose: Great tools for drilling holes in soft metal, wood, plastic, fiberglass, etc.

Twist Design: Precise 135o Split Point drill bit ensures clean & accurate hole drilling.

Material: HSS / High Speed Steel

Drill Metric Sizes: 25pcs of 1mm -13mm

with 118° split point angle

COPOUIXR High speed steel with cobalt drill bit set for hardened steel 13pcs brocas para metal duro

High speed steel cobalt drill bits for metal 5% cobalt drill bit set steel drill bits for hard metal diamonds are ideal for stainless steel and hard metals

135% self-sharpening impact drill set Drill point with built-in positioning function that requires no additional positioning Easy penetration of hard metals Long torsion bar cutting edge with different drilling depth option

【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.

Specifications:0.5/0.8/1.0/1.5/2.0/2.5/3.0/3.5MM*10PCS(approx:0.0197",0.0315",0.0394",0.0591",0.0787",0.0984",0.118",0.138")。Special attention:0.5/0.8MM are the micro drill bits.

HSS4241 Straight Shank Twist Drill Bit Set; HRC 58-60 Degrees

Fully Ground Manufacturing Process and 135 Degrees Point angle

This 18 piece Industrial Grade High Speed Steel set includes 9 HSS drill bit and 9 HSS plug hand taps.

Gyros 118 degree split point drill bit set is professionally made for general purpose drilling.

Twist drills jobber length metric set comes with straight shank bits and is stored in a strong metal storage case

Package Include: The package contains 10 pieces diameter 1.8mm straight shank drill bits, sufficient quantity to meet your various needs. Small bottle packing suitable for a small object processing.

High Quality Material: Manufactured from high quality cobalt HSS with molybdenum and cobalt added to harden alloys up to 67 for faster cutting and long service life, ideal for repetitive drilling in metal working.

Practical Design: Metal bit kits feature a straight shank design that makes them easier to fix and machined accurately, saving time and improving productivity. Suitable for home DIY, workshop or car repair shop use and work.

Total Length: 58mm / 2.3"; Shank Diameter: 2.5mm

Product Name: Twist Drill Bit; Package Content: 10pcs x Twist Drill Bit

Material: HSS, Cobalt; Flute Length: 25mm / 1"

【19PCS 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, containing 5% cobalt, which increases drill bit wear-resistance, durability and heat resistance.

【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】135 Degree Tip Twist Design，precise positioning, lower pressure, fast penetration. Equipped with a straight shank to prevent walking, making drilling more precise and fast,clears particles quickly, decreases friction and heat.

Twist Drill Bits: Drilling Diameter: 3.3mm / 0.13"; Flute Length: 35mm / 1.38";Overall Length: 60mm / 2.36". Spiral chip space design for fast and clean chip removal. Sharp cutting edge provides smooth cutting and no glitches.

Wide Applications: Suitable for precision cutting of stainless steel, alloy steel, carbon steel, tool steel non-ferrous metal, copper, plastics, etc.. Designed for drilling abrasive materials when drilling accuracy must be maintained. Can be used in high temperature drilling applications.

Material: Constructed from YG10X carbide (tungsten steel), the drill bit is hardened up to 91.5HRA, wear resistance, corrosion resistance, heat resistance, and the bending strength is greater than or equal to 2800 N/mm2.

Quality high speed steel ensures the bits super hard, sharp and cutting effectively with impressive cutting performance in metal, plastic, and wood etc with long tool life

All drill dimensional & tolerances conform to ASME/ANSI B94.11M drill standards or USCTI - United States Cutting Tool Institute (formerly MCTI)

Fully ground process ensures excellent chips moving, and 135 deg chisel angle with split point provide accuracy start for quick penetration without Walking and less Logging

Tap and Drill Bit: Tap thread size: M3 x 0.5, drill bit diameter: 2.5mm / 0.1".High-speed steel tool has high hardness and toughness for wear resistance. Good for general purpose applications.

Spiral Flute Tap: Spiral flute design, upward chip removal, right hand thread cutting. For processing blind holes and sticky materials, tapping aluminum, die steel, stainless steel, bronze, plastics. Titanium coating provides excellent corrosion resistance and wear resistance.

Twist Drill Bit: Spiral chip space design for fast and clean chip removal. Sharp cutting edge provides smooth cutting and no glitches. Cobalt high speed steel tool features high hardness (HRC65-66) and high red hardness, high wear resistance

OUTSTANDING QUALITY

PACKAGE OF 10

Made in the U.K.

TITANIUM | HIGH-SPEED STEEL: Made from 100% High-Speed Steel Construction with Titanium Coating for Proven Capability and Durability. Be equipped with every drill bit size you need in our handy and portable HSS metal drill bit kit. You will find long drill bits as well as small bits inside the metal storage box.

STRENGTH & DURABILITY: Made with HSS , Rockwall Hardness Level. Each of our HSS metric drill 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 Pcs bits, each drill bits have its own clearly labelled designated storage spot which makes it the best craftsman drill bit kit.

Size: Bit Diameter: 3.1mm; Flute Length: 28mm / 1.1"; Total Length: 60mm / 2.4"; Shank Diameter: 3.1mm

Feature: After using full grinding process, it has stronger cutting ability and longer service life.

Material: Cobalt-containing high-speed steel drill bit, high wear resistance and toughness, not easy to break, sharp cutting edge, effectively improving drilling speed.

Quality high speed steel ensures the bits super hard, sharp and cutting effectively with impressive cutting performance in metal, plastic, and wood etc with long tool life

All drill dimensional & tolerances conform to ASME/ANSI B94.11M drill standards or USCTI - United States Cutting Tool Institute (formerly MCTI)

Fully ground process ensures excellent chips moving, and 135 deg chisel angle with split point provide accuracy start for quick penetration without Walking and less Logging

[Key Parameters]: Shank Dia: 3mm/0.12"; Cutting Edge Dia: 3mm/0.12"; Cutting Edge Length: About 33mm/1.3"; Total Length: 61mm/2.4";

[Product Features]: Made of high-quality 5% cobalt element high-speed steel, five-axis composite machine integrated grinding manufacturing, high dimensional accuracy, after quenching and tempering treatment, the surface is gold-plated titanium treatment, wear-resistant, not easy to stick to the knife, and smooth chip removal"," High strength, good endurance and long service life;

[Scene]: Mainly used for machine power tools, electric drills, drill presses and other equipment main applicable accessories, can be drilled in metal products and non-metal products, steel, stainless steel, copper, aluminum, wood, plastic and other materials, through The effect of hole or counterbore is good;

Total Length: 108mm / 4.3"; Shank Diameter: 6.8mm

Product Name: Twist Drill Bit; Package Content: 3pcs x Twist Drill Bit

Material: HSS, Cobalt; Flute Length: 58mm / 2.3"

Tap and Drill Bit: Tap thread size: M5 x 0.8, drill bit diameter: 4.2mm / 0.17". High-speed steel tool has high hardness and toughness for wear resistance. Good for general purpose applications.

Spiral Flute Tap: Spiral flute design, upward chip removal, right hand thread cutting, fast tapping with accuracy. Suitable for processing blind holes and sticky materials, tapping aluminum, die steel, stainless steel, bronze, hard plastics.

Twist Drill Bit: Spiral chip space design for fast and clean chip removal. Sharp cutting edge provides smooth cutting and no glitches. Titanium coating provides excellent corrosion resistance and wear resistance.