Best Aluminum Short Drill Bits in 2026

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

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.

【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.

M35 COBALT HIGH SPEED STEEL: 3/8" drill bits for metal made from M35 Cobalt High Speed Steel and contain 5% Cobalt, which increases wear-resistance, durability and extra longer life span, so that the drill bits last through multiple uses.

135° SPLIT POINT: 135°quick-cut pilot split points are self-centering and can penetrate quickly with less pressure. Straight shank allows for firmly holding and accurate centering and makes drilling precise and faster.

FULLY GROUND PROCESS: Fully ground spiral groove design clears particles quickly, decreases friction and heat for faster drilling performance.

High Speed Steel tool - 25mm 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

Packaging: 10 pcs Cobalt Drill Bit Set , Diameter 3/16"(Dia 4.76mm) , Flute Length 2-5/16"（58.74mm） , in a sturdy plastic case for easy storage and carrying.

3/16" M35 Material Cobalt drill bits: 3/16" drill bits for metal is made of Industry grade M35 High Speed Steel, containing 5% cobalt, which increases drill bit wear-resistance, durability and heat resistance.

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.

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

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

Titanium Nitride coating resists heat and friction, extending the cutting edge life up to 6 times that of other high-speed step drill bits

Made from premium high-speed steel for increased durability

135-degree split-point tip starts drilling immediately with less force and eliminates "walking" across the work surface

Twist Drill Bits: Drilling Diameter: 1mm / 0.039"; Flute Length: 20mm / 0.79"; Overall Length: 40mm / 1.57"; Cutting Hardness (Max.): HRC45. Spiral chip space design for fast and clean chip removal. Sharp cutting edge provides smooth cutting and no glitches.

Wide Applications: Widely used for drilling non-ferrous metal, cast iron, stainless steel, aluminum, copper, alloy steel, plastic, wood. Designed with the base substrate without any additional coatings, suitable for wide ranges of applications.

Material: Constructed from medium grain C2/K20 tungsten carbide, the drill bit has good toughness, high hardness (HRA89) and wear resistance. With good milling and cutting performance, can ensure high work efficiency. Carbide tool offers faster cutting speeds than other substrates.

【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.

Parameter: Cutting and Shank Dia : 2mm / 0.08", Cutting Edge Length: 25mm / 0.98", Twist Drill Total Length : 49mm / 1.93".

Short Shank Twist Drill Bit Uses: For Stainless Steel/Aluminum Alloy/Iron/Copper/Plastic/Aluminum Plates/Metal Materials etc.

How To Use: When in use, The drill bit should be perpendicular to the workpiece and oil, water, or coolant should be added to keep cool.

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

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

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

STUBBY MECHANICS LENGTH: 135 degree split point reduces drill walking, straight shank

MADE FROM HIGH-SPEED STEEL AND 5% COBALT: improve much higher heat resistance because of cobalt steel's high red hardness, provide strong durable performance compared to typical hss drill bits

CAN BE REPEATEDLY SHARPENED AS NEEDED: cobalt drill bit's hardness is uniform throughout the entire material, so that can be repeatedly sharpened without damaging the cutting edge allowing it to drill more than hss drill bits

Straight flutes drill shallow and horizontal holes in cast iron, and non-ferrous and hardened materials

Carbide resists wear better than high-speed or cobalt steel and withstands high speeds

Uncoated (bright) finish is an untreated surface that can be used on a range of materials

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

Cobalt high speed steel ensures the bits super hard, sharp and cutting effectively with impressive performance in cutting 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

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

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

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"

Parameter: Cutting and Shank Dia : 5.5mm / 0.22", Cutting Edge Length: 55mm / 2.17", Twist Drill Total Length : 93mm / 3.66".

Short Shank Twist Drill Bit Uses: For Stainless Steel/Aluminum Alloy/Iron/Copper/Plastic/Aluminum Plates/Metal Materials etc.

How To Use: When in use, The drill bit should be perpendicular to the workpiece and oil, water, or coolant should be added to keep cool.

Drill Bits: Cutting edge diameter: 2.8mm / 0.11"; cutting edge length: 55mm / 2.17"; shank diameter: 2.8mm / 0.11"; overall length: 100mm / 3.94"; cutting hardness (max.): HRC55. Sharp cutting edge provides smooth cutting and no glitches.

Wide Applications: Suitable for drilling materials below HRC55, such as stainless steel, alloy steel, tool steel, carbon steel, aluminum alloy, etc.. Used on machining centers, drilling machines, CNC lathes, CNC engraving and milling machines.

Carbide Material: Made of super fine grain carbide, it has high hardness (HRC92-94), wear resistance, heat resistance, and high bending strength. With good milling and cutting performance, carbide can run at higher speed than high-speed steel.

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

99pcs Drill Bits Include: 11pcs of each size( 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/35", 11/64", 3/16", 13/64", 7/32", 15/64", 1/4", 17/64", 9/32", 19/64", 5/16", 21/64", 11/32", 3/64", 3/8", 25/64", 13/32", 27/64", 19/32", 29/64", 15/64", 31/64", 1/2") drilling dia M35 straight round shank twist drills, can accommodate a wide range of drilling needs.

M35 Twist Drill Bit: Made from M35 cobalt material which has the characteristic of high hardness and durability. The cobalt material gives the bit superior wear resistance and overall toughness, making it great for long-term use in a variety of drilling applications.

Quick and Clean Drilling: The external point angle design of this cobalt twist drill bit allows for fast and efficient drilling, with effective chip removal to prevent clogging, perfect for a range of materials including metal, wood, and plastic.

13pcs Drill Bits Include: 1pcs of each size( 1/17", 7/89", 6/61", 11/93", 12/95", 4/29", 14/89", 14/79", 17/90", 13/66", 21/97", 17/72") drilling dia M35 straight hex shank twist drills, can accommodate a wide range of drilling needs.

M35 Twist Drill Bit: Made from M35 cobalt material which has the characteristic of high hardness and durability. The cobalt material gives the bit superior wear resistance and overall toughness, making it great for long-term use in a variety of drilling applications.

Quick and Clean Drilling: The external point angle design of this cobalt twist drill bit allows for fast and efficient drilling, with effective chip removal to prevent clogging, perfect for a range of materials including metal, wood, and plastic.

99pcs Drill Bits Include: 16pcs 1/17", 16pcs 7/89", 15pcs 6/61", 10pcs 11/93", 10pcs 12/95", 8pcs 14/99", 8pcs 14/89", 3pcs 4/79", 3pcs 13/66", 2pcs 21/97", 2pcs 17/72", 2pcs 11/43", 2pcs 23/73", 2pcs 37/94" drilling dia high-speed steel straight shank twist drills, can accommodate a wide range of drilling needs.

Titanium Coated Surface: Made of high-speed steel with titanium nitride coating which can increase the hardness of the twist drill and reduces friction between the bit and the material being drilled. Suitable for use in both handheld drills and drill presses.

High Hardness Drilling Performance: Suitable for hardened materials and hard metals, such as cast iron, malleable iron, aluminum, wood, plastic etc., and also suitable for soft materials. Great replacement for your dull drill bit to improve work efficiency.