18 Best Walter Cobalt Drill Bits of 2025 – Romance University
After hours researching and comparing all models on the market, Romance University finds out Top 18 Best Walter Cobalt Drill Bits of 2025. Check our ranking below.
2,286 Reviews Scanned
Rank No. #1
Walter Surface Technologies 01E618 29-Piece Jobber's Length Bits - Round Shank SST+ Drill Bit Set. Drilling Tools and Accessories,Orange
- Versatile: the round shank bit is ideal to drill through round surfaces. The drill bit tool works best with stationary machines
- HSS Drill Bit: the SST+ drill bit contains cobalt blend that ensures longer lifespan of the tools, allowing you to drill more holes with each bit
- Sturdy Case: the complete drill bit set is packaged in a durable, shock resistant metal container weighing 2.65 lbs. The set includes 29 pieces of drill bits, sized from 1/16 in. to ½ in.
- Compatibility: the high speed drill tool is compatible with steel, stainless steel, aluminum, and other ferrous and non-ferrous metals
- Ease of Usage: the size for each jobbers length drill bit is clearly marked on the inside panel for a quick identification and selection
Rank No. #2
Walter Surface Technologies 01E178 C-2 SST+ Drill Bits Set
- Special Bronze Sat Surface Treatment
- Special Cobalt Hess Alloy Lasts Longer
- Special bronze SST surface treatment
- Special cobalt HSS alloy lasts longer
Rank No. #3
Walter Surface Technologies - 1E+118 01E118 Quick Shank Jobber Length Bits - 29 Piece SST Drill Bit Set with Cobalt Blend. Drilling Tools and Accessories
- Features: drill bit tools have a tough cobalt blend construction and back tapered body. High speed steel tool with special bronze SST surface treatment can be used to drill non-ferrous metal, aluminum, mild steel, and thin gauge metal sheets
- Versatile: jobbers bit set can quickly drill through multiple layers of metal and round surfaces with its self-centering split points. Quick shank bits are ideal for cordless drilling, allowing you to drill more holes with one-time charge
- Ease of Usage: each drill bit has its size marked on the inside panel for quick identification. Twist drilling tool features high flow spiral design for quick evacuation of the chip with a fully ground body
- Tough Drill Bit: SST+ drill bits are designed with a quick shank that guarantees fast and secure tightening inside any keyed or keyless chucks. Walter drill set features 29 tools with varying flute length, drill sizes, and shanks
- Easy to Carry: all the jobber bits are available in a sturdy metal container. Shock-resistant, extra-thick polyethylene carrying case weighs just 2.56 lbs.
Rank No. #4
ANGELSWORD M35 Cobalt Stepped Point Tip Drill Bit,29 PCS(1/16"-1/2"), Titanium Coated Drill bit, for Steel, Cast Iron, Aluminum, Brass, Acrylics
- 【M35 Cobalt, TiAlN Coated Stepped Point Tip Drill Bit】Includes 29 pc: 1/16"-1/2", with one specification every 1/64".
- 【Durable M35 (5% Cobalt) Material】Enhanced wear resistance, good toughness and hardness, superior hot hardness (red hardness). Improve cutting performance at high speeds.
- 【Stepped Point Tip】More efficient, one drill bit for different sizes, no need to ensure accuracy by pre-drilling a pilot hole. Provide high precision & consistency.
- 【Enhanced Grip and Stability】Titanium Aluminum Nitride Coating provide advanced heat resistance, better durability.3-flat anti-slip shank for optimal and stable control.
- 【Wide Application and Easy Operation】Ideal for Steel, Cast iron, Aluminum, Brass, Acrylics to drill smooth and precise holes. Most outstanding on Sheet Metal.
Rank No. #5
BOSCH CO14B 14-Piece Assorted Set with Included Case - Cobalt M42 Metal Drill Bits with Three-Flat Shank for Drilling Applications in Stainless Steel, Cast Iron, Titanium, and Light-Gauge Metal
- 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
Rank No. #6
Drill America - DWD29J-CO-PC 29 Piece M35 Cobalt Drill Bit Set in Round Case (1/16" - 1/2" X 64ths), DWDCO Series
- Set of 29 jobber length drill bits includes inch sizes 1/16" to 1/2" in 1/64" increments
- Cobalt steel provides extended tool life compared to high-speed steel drill bits when drilling hard materials
- Gold oxide finish lubricates the drill bit and provides wear resistance
- Self-centering 135-degree split point penetrates hard material without a pilot hole and produces small chips to reduce clogging
- Meets ANSI specifications
Rank No. #7
CaRoller Cobalt Drill Bit Set 29-Piece M35 Cobalt Steel Metal Drill Bits Durable Round Shank Drill Sets for Steel, Wood Plastic Sheet Metal – Includes Practical Cup-Type Holder (29pcs Cobalt)
- 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.
Rank No. #8
Cobalt Drill Bit Set - 15Pcs M35 HSS Twist Drill Bits, Straight Shank, Metal Drills bit Set for Hardened Metal, Stainless Steel, Cast Iron, Wood and Plastic with Index Storage Case, 1/16"-3/8"
- M35 Cobalt Drill Bit: Premium High Speed Steel M35 (Cobalt 5%) offers superior heat resistance and greater hardness compared to ordinary drill bits. It can extend the tool's service life when drilling hard materials.
- 135° Split Point Design: The cobalt drill bit set can be used effectively on most soft and hard objects, with a 135 degree point tip with round straight shank, self-centering to prevent walk-off, make drilling precise and faster.
- Efficient Drilling: Fully Ground twist design helps clear particles faster, decreases friction and heat for a cooler drilling performance.
- Various Sizes: 15 sets of drill bits include 1/16"x2pcs, 5/64"x2pcs, 3/32"x2pcs, 7/64", 1/8", 9/64", 5/32", 11/64", 3/16", 1/4", 5/16", 3/8", can meet more needs.
- 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.
Rank No. #9
Drill America 29 Piece m42 Cobalt Drill Bit Set (1/16" - 1/2" X 64ths), D/ACO Series
- 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
- When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging
- 29 piece drill bit set comes in a metal case
Rank No. #10
Bosch CO14 14 pc. Cobalt Metal Drill Bit Set
- MANUFACTURED FROM COBALT: For drilling in hard and abrasive materials
- NO-SKATE TIP: For clean and accurate starts
- THREE-FLAT SHANK: Promotes better grip on bits 3/16 in. and larger
- DESIGNED FOR VERY HIGH DRILLING TEMPERATURES: For superior performance in stainless steel
- HIGH VISIBILITY MARKING: Provide clearly marked diameter
Rank No. #11
Accusize Industrial Tools M35 (H.S.S.+5% Cobalt) 1/2" Shank and Drill - 9/16" to 1", Set of 8 Pieces, H516-6507
- Premium Material Composition: Crafted with M35 grade high-speed steel combined with 5% Cobalt, enhancing strength and heat resistance.
- Comprehensive Set: Includes an 8-piece set with sizes ranging from 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16", to 1", housed in a fitted plastic box for easy organization and protection.
- Advanced Design: Features 135° split point drills that initiate contact without the need for a pilot hole, reducing drill bit walking and ensuring precise, efficient drilling.
- Optimized for Tough Materials: Ideal for drilling into hard materials, including cast iron, heat-treated steel, stainless steel, and other hard materials, offering faster cutting speeds and extended tool life.
- Enhanced Compatibility and Stability: Straight shank design with 3-equal-flats ensures a secure grip in 1/2" chucks, reducing slippage and increasing stability during heavy-duty drilling tasks.
Rank No. #12
BOSCH CO2143B 1-Piece 1/4 in. x 4 in. Cobalt M42 Metal Drill Bit with Three-Flat Shank for Drilling Applications in Stainless Steel, Cast Iron, Titanium, Light-Gauge Metal, Aluminum
- 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
Rank No. #13
BOSCH CO2151B 1-Piece 3/8 in. x 5 in. Cobalt M42 Metal Drill Bit with Three-Flat Shank for Drilling Applications in Stainless Steel, Cast Iron, Titanium, Light-Gauge Metal, Aluminum
- 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
Rank No. #14
DEWALT Drill Bit Set, 3-Flats Shank,14-Piece, 135 Degree Split Point, for Plastic, Wood and Metal (DWA1184)
- 135 Degree Split point tip design to help reduce walking
- High Speed Steel to be used in plastic, wood, and metal
- Tapered web design for extreme durability and resisting breakage
- Black and gold coating to help prevent rust and wear
- 3-Flats shank to reduce spin-out in the chuck on sizes larger than 3/16-in
Rank No. #15
Drill America 3 Piece Cobalt Stepped Point Drill Bit Set (3/6", 1/4", 5/16"), GSC Series ZMPOUGSC3
- Stepped Point Cobalt Drill Bits start easier, drill faster, increase lifespan and reduce heat compared to standard drill bits
- They can be used to enlarge existing holes or to create new, smoother holes
- For use in a wide range of materials such as acrylics, steel, metal, brass and other hard metals
- These drills have a 135 degree split point tip to prevent walking
- Sizes in set: 3/6", 1/4", 5/16"
Rank No. #16
Milwaukee 48-89-2321 3/8-Inch Thunderbolt Cobalt Drill Bit
- 135 degree Split Point, Precision Start No Walking
- 3-Flat Secure Grip Shank, Reduces Bit Slipping in Chuck
- Specialty Bit for Cast Iron and Stainless Steel
- 3-Flat Secure Grip Shank, Reduces Bit Slipping in Chuck
Rank No. #17
Drill America - D/A29J-CO-PC 29 Piece M42 Cobalt Drill Bit Set in Round Case (1/16" - 1/2" X 64ths), D/ACO Series
- 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
- Round shanks allow use with a wide variety of tool holding systems
- Manufactured to Aerospace Standard 907 and display high red hardness, permitting speeds up to 30% greater than with conventional M2 high speed steel
Rank No. #18
Sinyeenglon Cobalt Drill Bits Set for Hardened Metal and Stainless Steel, 99Pcs M35 High Speed Steel Twist Jobber Drill Bits 1/16"-3/8", with Plastic Index Storage Case
- Cobalt M35 Material: High cost, but hardness is up to 67, cut faster and has a long life, up to 12 times compared with the average HSS titanium coated bit
- Hardened Full Grinding Process: Increases wear resistance, sharp and durable, used for stainless steel, cast iron, zinc alloy, titanium, aluminum and hard metal
- Packaging: Hard and thick plastic box, drills bagged for compartmentalized storage, reasonable design, well secured package
- Convenient Access: Various sizes are placed in different compartments of the plastic box, and the corresponding sizes of different drills are printed on the bottom of the lid, making it very convenient to access
- Various Sizes: 16Pcs 1/16in, 16Pcs 5/64in, 15Pcs 3/32in, 10Pcs 7/64in, 10Pcs 1/8in, 8Pcs 9/64in, 8Pcs 5/32in, 3Pcs 11/64in, 3Pcs 3/16in, 2Pcs 13/64in, 2Pcs 7/32in, 2Pcs 1/4 in, 2Pcs 5/16in, and 2Pcs 3/8in
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