Best Cobalt Drill Bits For Hardened Steel : Review And Buying Guide

Cobalt M42 drill bit – provides upgraded M42 Cobalt jobber-length bits designed for durability, high heat resistance and Hardened surface for stainless steel, cast iron, titanium, light-gauge metal and aluminum

Enhanced M42 alloy material – contains 8% Cobalt alloy that delivers 10x life vs. Standard bits

High-heat resistant bits – withstand high-temperature applications for extended periods of time

Thick web-helix design – provides additional stability in tough applications

Surface-hardened tip – penetrates tough abrasive materials

115 PIECES INCLUDED: 29pcs Fractional Size:1/16” to 1/2” in 1/64th increments; 26pcs Letter Size: A To Z; 60pcs Numbered Size: #1 To #60.

HSS WITH 5% COBALT: Durable, Higher Heat & Abrasion Resistance.

PRECISE 135° SPLIT POINT & TWIST DESIGN: Prevent walking, clear chips and particles faster.

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.

ORGANIZED HOLDER: Set includes the drill bit holder with size index for easy storage and organizing.

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.

SIZE INCLUDED: 15pcs jobber length drill bit set with plastic storage case including sizes:1/16" 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.

100% SATISFACTION GUARANTEE: If you are not 100% satisfied with your purchase for any reason whatsoever simply please feel free to contact us.

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.

SMOOTHLY DRILLING - 135-degree split point tip & twist design increases cutting speed with self-centering and prevents skating starts or walking.

29PCS DRILL BIT SET - Metal index case with size chart for easy bit access and identification. Includes drill bit sizes 1/16-inch to 1/2-inch in 1/64-inch increments.

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

Multi-purpose Use: Drills are successful in cutting hard metals such as stainless steel and cast iron, and also can be used for softer materials

Easy to Carry:The twist drill bits are housed in plastic case for easy storage, easy to carry out homework

A Must For Professionals: Whether a professional wood worker, handyman or construction worker, or you simply enjoy the occasional house project as a relaxing hobby, the CaRoller metal drill bits for steel are an excellent assortment for ensuring perfect holes and plugs!

Heavy Duty Construction: This drill bit sets made with HSS cobalt durable material and amber coating which ensures long-lasting use and superior wear resistance!

Convenient Size Variety: This 29-piece M35 drill 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.

Practical and Portable: Say goodbye to constantly losing or misplacing your drill bits! The CaRoller drill bit set for metal comes with an ergonomic and portable cup-type round carrying case with built-in clip, easily attaching to your tool belt and keeping your bits within immediate reach!

Versatile Functions: Featuring 135-degree split point with round straight shank, an intelligent self-centering design which prevents walking, fully ground twist design ensuring a cooler drilling performance by decreasing friction, this cobalt drill bit set easily drills through a wide variety of materials including stainless steel, cast iron, high temperature alloy, titanium alloy, hard plastics and wood.

GENERAL ROUGHING CUTTER - Speed Tiger 600 Nano carbide tools excel at working carbon steels (~HB225), alloy steels (HB225~325), pre-hardened steels (up to HRC45), hardened Steels (HRC40~45), cast iron

HIGH PERFORMANCE FOR HARD MATERIALS - Cutter is made of Micro Grain Carbide that is very tough, resists wear and offers high cutting performance

ZrN-A COATING - Zirconium nitride (ZrN) +Titanium aluminum boron nitride (AlTiBN) coating lubricates the end mill for stability at high temperature and superior wear resistance at high cutting speeds, offering better heat resistance than TiAlN, TiN or TiCN coatings

HIGH-QUALITY - Flutes ground by a world-class ISO-9001 Factory; Great performance at a competitive price.

DEDICATED SUPPORT - Contact seller via Amazon anytime for cutting condition data to get the best performance from your Speed Tiger cutters

🔨[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", can meet more needs.

🔨[M35 Cobalt Drill Bit] The M35 cobalt drill bit is a durable, sharp and robust drill bit suitable for cutting stainless steel, iron castings, copper, aluminum and other soft metals as well as plastics, wood etc.

🔨[Quick and Efficient] The cobalt drill bit set can be used effectively on most soft and hard objects, with a 135 degree point tip and twist design for faster cutting, self-centering to prevent walk-off and faster chip and particle removal.

🔨[HSS Drill Bit Set] HSS cobalt drill bit set for hardened steel with excellent cutting performance. 29 sets of drill bits for long term use. The inserts are hardened and polished for improved sharpness and precise cutting without wobbling.

🔨[Easy Storage] The drill set includes drill holders with size indexes and is packaged in a small, strong package for easy storage and sorting. If you have any questions, please feel free to contact us and we will be happy to help you.

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.

Specifications - Set of 29pcs jobber length drill bits 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", 1/2", by 1/64" Increments.

100% Satisfaction Guarantee - If you are not fully satisfied with our product for any reason, please feel free to contact us, we will try our best to serve you.

Super Premium Solid Cobalt M42+ Steel

1/16" to 1/2" by 1/64th Increments (Does Not Skip any Sizes)

135 Degree Split Point Prevents "Walking"

Tri-Flat Shank Prevents "Spinning" in the Drill Chuck

Lifetime Warranty

SET OF 13 COBALT DRILL BITS - In the following imperial sizes 1/4", 15/64", 7/32", 13/64", 3/16", 11/64", 5/32", 9/64", 1/8", 7/64", 3/32", 5/64", 1/16"

M35, Fully Ground, 135° Split Point - Our Drill Bits Contain 5% Cobalt, Are Fully Grounded for a Precision Drilling Diameter. 135° Split Point Design Makes it Easier to Drill Repeated Holes in Harder Materials.

PLASTIC STORAGE CASE INCLUDED - Incredibly Tough and Durable Plastic Case. Perfect for Keeping Your Cobalt Drill Bits Neatly Organized and Safe.

COBALT DRILL BITS ARE THE PERFECT DRILL BITS FOR METAL - As well as other hard materials such as Stainless Steel, Hardened Steel, Cast Iron, Bronze, Titanium, and More!

LIFETIME GUARANTEE - Here at Owl Tools (USA Based Company) we only care about your satisfaction. We try our best to ensure each product is in perfect condition before you get it, but if something is not up to your satisfaction, please contact us for a full refund or replacement.

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.

SMOOTHLY DRILLING - 135-degree split point tip & twist design increases cutting speed with self-centering and prevents skating starts or walking.

21PCS DRILL BIT SET - Metal index case with size chart for easy bit access and identification. Includes drill bit sizes 1/16-inch to 3/8-inch in 1/64-inch increments.