Best Straight Long Drill Bits in 2026

Effective in drilling tough, high tensile strength materials like stainless steel, inconel and titanium

135° split point tip prevents drill from walking

Round shanks allow use with a wide variety of tool holding systems

Effective in drilling tough, high tensile strength materials like stainless steel, inconel and titanium

135° split point tip prevents drill from walking

Round shanks allow use with a wide variety of tool holding systems

Assortment of 29 jobber length drill bits includes inch sizes 1/16" to 1/2" in 1/64" increments

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

Black and gold oxide finish resists corrosion and increases the hardness of the drill bit

Effective in drilling tough, high tensile strength materials like stainless steel, inconel and titanium

135° split point tip prevents drill from walking

Round shanks allow use with a wide variety of tool holding systems

Effective in drilling tough, high tensile strength materials like stainless steel, inconel and titanium

135° split point tip prevents drill from walking

Round shanks allow use with a wide variety of tool holding systems

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.

Cobalt steel tools are similar to high-speed steel, but with more cobalt for improved performance when cutting harder metals such as stainless steel or nickel alloys

Gold oxide is a thinner oxide surface treatment than black oxide typically used to identify cobalt steel tools; performance is similar to uncoated tools

Round shanks allow use with a wide variety of toolholding systems

✅【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 25 times.

✅【METRIC DIRLL BITS SET】The drill bits include 13pcs metric drills: 1.5mm, 2mm, 2.5mm, 3mm, 3.2mm, 3.5mm, 4mm, 4.5mm, 4.8mm, 5mm, 5.5mm, 6mm, 6.5mm, can meet more needs.

✅【TWIST DESIGN AND PERFORMANCE】Precise 148° 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.

✔️【 COBALT DRILL BIT DIMENSION】:1/8"(Diameter) x 1-5/8"( Flute Length) x 12"(Overall Length)

✔️【 COBALT MATERIAL】: HSS(M35) Cobalt Steel is the premium material with high hardness and red hardness to enable long drilling life and fast drilling performance.

✔️【 SURFACE TREATMENT】: The Gold Oxide Ember finished surface treatment strongthen the hardness of drill bit body  to ensure the long drilling life and better drilling performance.

✔️【 COBALT DRILL BIT DIMENSION】:1/8"(Diameter) x 1-5/8"( Flute Length) x 6"(Overall Length)

✔️【 COBALT MATERIAL】: HSS(M35) Cobalt Steel is the premium material with high hardness and red hardness to enable long drilling life and fast drilling performance.

✔️【 SURFACE TREATMENT】: The Gold Oxide Ember finished surface treatment strongthen the hardness of drill bit body  to ensure the long drilling life and better drilling performance.

Set contains 29 m42 Cobalt Drill Bits sizes 1/16" - 1/2" x 1/64" increments

Cobalt Drills are effective in drilling tough, high tensile strength materials like stainless steel, Inconel, and titanium

Gold oxide finish acts as a lubricant and provides wear resistance

Features: Cutting Edge Diameter : 2.5mm / 0.1"; Shank Diameter : 2.5mm / 0.1"; Cutting Edge Length: 26mm / 1.02"; Total Length : 55mm / 2.17"; 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.

High Quailty Material: Manufactured from Industry grade M35 High Speed Steel with 5% Cobalt added, usually giving better Heat, Wear and Chip Resistance and Long Tool Life.

135° Split Point: The 135° fast cutting point is automatically centered and prevents walking, clears chips and particles faster. Making drilling precise, reducing friction and heat for a smooth chip movement.

Professional Drill Bits: gold oxide finish and round straight shanks， fully ground spiral groove design with high grinding accuracy, for cutting stainless steel, steel and cast iron as well as wood, aluminum alloys and other metals.

✅【Five-blade design】Each countersunk drill adopts five-blade blade design, which can reduce vibration and prolong life, achieve smoother drilling, with 1/4" metal hex.

✅【Compact Grinding】Precision grinding 82° tip for drilling holes on most medium hardness stainless steel, copper, aluminum, wood, plastic.

✅【M2 HSS Cobalt Layered Drill Bits】M2 Cobalt Coated, each metal countersunk drill bit is made of high quality M2 HSS material, this countersunk drill bit set is excellent in heat, corrosion and rust resistance to reduce friction and run cooler.

Cobalt steel tools are similar to high-speed steel, but with more cobalt for improved performance when cutting harder metals such as stainless steel or nickel alloys

Gold oxide is a thinner oxide surface treatment than black oxide typically used to identify cobalt steel tools; performance is similar to uncoated tools

Round shanks allow use with a wide variety of toolholding systems

✅【M35 TWIST HEX DRILL BITS SET】Made from M35 Cobalt Steel with 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.

✅【13PCS SET COMBINATION】13 most common sizes (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") to meet all needs, a drill holder with size index is included in the set for easy storage and organization.

✅【FULL GRINDING PROCESS AND 135° SPLIT POINT】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.

✅【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.

✅【13PCS SAE DIRLL BITS SET】The set includes 13pcs drill bits. 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.

✅【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.

✅【29PCS SAE DIRLL BITS SET】The set includes 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 and 1/2 inch. Comes in metal indexed storage case for easy storage.

✅【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.

Long length drill bit has an extended flute and overall length to drill deeper and reach farther than a jobber length drill bit

Cobalt steel provides extended tool life compared to high-speed steel drill bits when drilling hard materials

Gold oxide finish lubricates and provides wear resistance on ferrous materials

MULTIPLE SIZES: The countersink set is made of industrial grade high speed steel for durability. Includes 5 most commonly used diameter sizes: 1/4, 3/8, 1/2, 5/8, 3/4 inches to meet your daily needs. Countersink drill bits are a great fathers day gifts from daughter son.

HIGH PRECISION: Each countersink drill bit set has a corrosion resistant gold oxide coating. Precision ground 82 Degree flat heads screws remove chips smoother allowing the screw heads to be flush and even with the surface of the material being utilized.

UNIVERSAL 1/4” ROUND SHANK: The counter sinker drill bit is designed with 6mm round shank, which fits all handheld and stationary drills. This mill cutter bit is suitable for wood, soft metal, fiberboard, particle board, plywood, plastic, aluminum board, PCB board and more.