Top 10 Best Cobalt Drill Bits 2023- The Honest Review

Features :

• ✅【M35 Cobalt Superhard High Speed Steel】: ISI M35/1.3243/SKH55/M35 steel is a kind of high speed steel containing cobalt, which has the characteristics of high wear resistance, high pressure resistance and sintering resistance.
• ✅【100 extra-long warranty period】：if you have any questions about the product, please contact us and we will answer you within 12 hours. If the hexagonal handle breaks, refund or replace for 100% .
• ✅【M35 step drill compatibility 】： step drills can quickly and smoothly drill holes of different diameters, such as stainless steel, aluminum, wood, plastic board (the board must be thinner than the height of the step drill)
• ✅【M35 four spiral groove】: step drill four cutting blade design. Faster, smoother cutting and easier separation of sawdust.
• ✅【34 Sizes :Including】:1/8″-1/2″ 13 Sizes，1/4″-3/4″ 9 Sizes，3/16″ – 7/8″ 12 Sizes.
• ✅【M35 high speed steel with cobalt】: high hardness (HRC67-70) , high red hardness (625 ° C, 4H, HRC63-65) , wear resistance, toughness and bending strength are not lower than ordinary high speed steel, M35 high speed steel is characterized by general cutting with CO, quenching hardness is 1200-1240c.

Features :

• [Heavy Duty for Stainless Steel] The M35 Cobalt Drill Bits is Industrial Grade and can drill 8X longer life and 3X faster. This Cobalt Step bits can help you cut more holes, Heavy Duty for Stainless Steel, Hard steel,Galvanized Steel, Aluminum,Iron, Wood and Copper. If you’re expanding a lot of holes in metal sheet then please choose this step drill bit
• [M35 Cobalt HSS] This Cobalt Drill bit made of M35 Cobalt Steel can successfully drill more than 35 holes easily into 1/5″ thick Stainless Steel plate like knife through butter!
• [6 Steps︱2-Spiral-Flute] 6 steps: from 3/16″, 7/8″, 1-1/8″, 1-7/32″, 1-1/4″ to 1-3/8″. 2-Spiral-Flute:Clears Chips faster
• [Cutting Fluid] Cutting Fluid must be poured during work for longer life! Prohibit water-cooling to prevent rust!
• [3/8″ Tri-Flatted Shank] Fits into power tools chuck securely and eliminates slip

Features :

• 🔨【Double Spiral Flute】 Compared with the ordinary step drill, the cobalt step drill bit has a unique double cutting blade design. At the same time, it has the same quality and is more cost-effective compared with 3 and 4 spiral drills, and even bring you the pleasure of cutting butter blocks.
• 🔨【TiAIN Coating】The surface of the step drill bit set for metal heavy duty is coated with a layer of TiAIN, which can minimize the wear of the drill bit during each drilling process. The hardness of the 89HRC surface has also improved to a higher level, which can cut harder materials and greatly improve the cutting speed.
• 🔨【M35 Cobalt Material】This is a M35 cobalt step drill. You will obviously feel that it is more solid than conventional titanium material, and it will also make you feel unprecedented smoothness in the drilling process. It will be more excellent than you think.
• 🔨【34 Hole Sizes】The specification of the step drill is from 1/8 “- 7/8″ includes 3 bits with 1/8″ – 1/2″, 1/4″ – 3/4″, 3/16″ – 7/8”. Each type of step drill contains a variety of specifications, which can meet your needs in a wider range. At the same time, you do not need to change the drill frequently, saving your precious time.
• 🔨【90 day warranty period】 If you are not satisfied with the product during use, please contact us for 100% refund or replacement service.

Features :

• FOUR FLUTE STEP DRILL BIT – Ordinary step drills are prone to deflection during cutting, but four Flute step drill are more stable in cutting. The service life is twice as long as that of ordinary step drills, the drilling accuracy is significantly improved, and the cutting speed is faster when drilling, which has a unique effect on stainless steel drilling.
• M35 COBALT HSS – M35 cobalt HSS can obtain high hardness (HRC 64-66), high red hardness and high wear resistance through proper heat treatment. Its toughness and bending strength are higher than ordinary high-speed steel, and it is better for hard materials.
• TiAlN COATING – As a new coating material in the past two years, TiAlN coating has excellent characteristics such as high hardness, high oxidation temperature, good thermal hardness, strong adhesion, small friction coefficient, and low thermal conductivity.
• 135°CUTTING ANGLE – The increased angle of the drill tip is more suitable for drilling hard materials than 118°. The larger the included angle, the smaller the self-wear and the larger the stress area.
• TIPS – Due to high-speed rotation, the temperature of the drill bit will continue to rise. It is recommended to add cutting oil or spray water to cool down when working continuously, which can effectively improve the service life of the step drill bit. If the product has any quality problems, please contact us in time. We offer a 100-day warranty.

Features :

• 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
• Includes – 1/16″, 5/64″, 3/32″, 7/64″, 1/8″, 9/64″, 5/32″, 3/16″, 7/32″, 1/4″, 5/16″, 3/8″, 1/2″

Features :

• Connectable accessory storage system to optimize storage space of drill bits for wood, metal or i-beams
• Patented bit-bar design allows easy removal of drill bits and customizable placement
• DEWALT drill bit set comes with clear lid allowing you to easily see contents at glance
• Clip latch for secure closing
• Small Bulk Storage size fits inside the Small and Medium ToughCase+ (sold separately) – Ideal for organizing loose bits

Features :

• 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

Features :

• 【M35 HSS+5% Cobalt】：Yougfin drill bits are made of M35 High Speed Steel with 5% Cobalt added, which is much harder than typical HSS and thus suitable for precision drilling in stainless steel and other hard materials. What’s more, cobalt blend gives these bits a much longer life
• 【Dual Flutes】:Drill bits are rotary cutting tools that have two cutting edges and two flutes which are grooves formed in the body to provide cutting lips, to permit the removal of chips and to allow coolant or cutting fluid to reach the cutting action
• 【135° Split Point】：These bits have a small point angle of 135° and require less pressure when centering in the material. The point starts drilling at contact, reducing friction, pressure, and heat. The larger the point angle, the higher the contact pressure and the centering in the material requires more pressure
• 【Operation Technique】：When drilling a hole with a cobalt bit, add a drop of oil on the metal to keep the cutting edge cooler as it cuts. You also want to consider placing some wood underneath the steel if possible. This lets you cut cleanly through the material and not strike a surface below which might dull the cutting edge
• 【Application & Tip】：Yougfin Jobber Drill Bit are ideal for sheet metal working and are suitable for cutting non-ferrous metals, plastic, wood board, etc. ***Tip***：Please keep the bit perpendicular to the material during operation to prevent it from breakage. If you have any questions about Yougfin products, please feel free to contact us

Features :

• 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.

Features :

• 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.