HIDOTOL M35 Cobalt Drill Bits (115-PC) Review – Pros & Cons – HIDOTOL Cobalt Drill Bit Set

As an enthusiastic DIYer, I recently acquired the HIDOTOL M35 Cobalt Drill Bits (115-PC) set. This comprehensive collection promises to be a workshop workhorse. It includes jobber-length drill bits. You get sizes from 1/16″ to 1/2″. Also, A-Z and 1-60 are included. These bits are M35 high-speed steel. Furthermore, they contain 5% cobalt. This cobalt content is a game-changer. It makes them tough. They resist heat and abrasion. Consequently, they tackle challenging materials. Think hardened metal and stainless steel. Moreover, cast iron is no match. Even plastic and wood are easily drilled. This set feels like a Swiss Army knife for drilling.

The performance of the HIDOTOL M35 Cobalt Drill Bits (115-PC) is impressive. Each bit acts like a tiny, persistent miner. It chews through material. They maintain sharpness. This is crucial for repetitive tasks. In addition, their split point tip prevents walking. Therefore, drilling is precise. You get clean, accurate holes. I’ve used them on various projects. They consistently deliver. Furthermore, the range of sizes is incredibly useful. You’ll always find the right bit. Whether it’s a tiny pilot hole or a larger bore, this set has it. Indeed, it’s a versatile tool.

Finally, the durability stands out. These HIDOTOL M35 Cobalt Drill Bits (115-PC) are built to last. They laugh in the face of tough materials. Even under pressure, they perform. Consequently, you save money. You won’t constantly replace bits. This set is an investment. It’s perfect for home improvement. It’s also great for professional use. All things considered, this set is a champion. It’s a must-have for any toolbox.

FEATURES:
– 115 drill bits included
– M35 cobalt steel material
– High-speed drilling
– Twist jobber length
– For hardened metals
– Drills stainless steel
– Works on cast iron
– Suitable for plastic
– Good for wood

This drill bit set has 115 pieces made from strong M35 cobalt steel, which helps them drill quickly through tough materials. They are jobber length, meaning they are a standard size for many drilling jobs. You can use these bits to drill into hardened metals, stainless steel, cast iron, plastic, and even wood.

PROS:
– Good quality for the price
– Excellent polish, finish
– Very sharp
– Works well
– Good set
– Work well
– Good product
– Effective drilling
– Good cutting action
– Could not be better
– Easy how they assorted
– Last forever
– Very good bits
– They do cut as expected

CONS:
– Case doesn’t stay shut
– Bits fall out tantly
– Very brittle and break easy

The HIDOTOL 115-piece Cobalt Drill Bit Set is a good value for its price, offering sharp M35 high-speed steel bits that effectively drill through tough materials like hardened metal, stainless steel, cast iron, plastic, and wood. Users appreciate the excellent polish and finish of these durable bits, which are well-assorted and designed to last. However, a significant drawback is the poor quality of the case, which doesn’t stay shut, causing the bits to fall out easily and making them prone to breaking due to their brittle nature. Read more…








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Best Hidotol M35 Cobalt Drill Bits 115 Deals

HIDOTOL Cobalt Drill Bit Set 115 PCS - M35 High Speed Steel Twist Jobber Length Drill Bits for Hardened Metal, Stainless Steel, Cast Iron, Plastic and Wood, 1/16"-1/2", A-Z, 1-60

Image of HIDOTOL Cobalt Drill Bit Set 115 PCS - M35 High Speed Steel Twist Jobber Length Drill Bits for Hardened Metal, Stainless Steel, Cast Iron, Plastic and Wood, 1/16"-1/2", A-Z, 1-60

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Key Features

  • ✅ 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 - 115pcs includes 29pcs fractional size 1/16”-1/2” by 1/64" Increments, 26pcs letter sizes A to Z, 60pcs numbered wire gauges #1 to #60.
  • ✅ 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.

Product Details

Brand:HIDOTOL
Size:Cobalt 115 PCS
Dimensions:15.29 X 6.18 X 4.01 inches

HIDOTOL 115PCS Cobalt Drill Bit Set M35 HSS for Hardened Steel Fractional 1/16"-1/2", Letter A - Z, Wire #1 - #60 with Indexed Metal Case

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Key Features

  • ✅ High Quality Material - Premium 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.
  • ✅ Specifications - 115pcs includes 29pcs fractional size 1/16”-1/2” by 1/64" Increments, 26pcs letter sizes A to Z, 60pcs numbered wire gauges #1 to #60.
  • ✅ Organized Holder - The whole drill bit set are kept in one metal case with size index holder for easy storage and organizing.

Product Details

Brand:HIDOTOL
Size:Cobalt 115 PCS - Sturdy Metal Box
Color:Gold
Dimensions:13.5 X 4.8 X 2.67 inches

Cobalt Drill Bit Set - 115Pcs M35 High Speed Steel Bits for Hardened Metals, Stainless Steel, Cast Iron and Wooden Plastics, with Metal Index Storage Box,1/16"-1/2", A-Z, #1-#60

Image of Cobalt Drill Bit Set - 115Pcs M35 High Speed Steel Bits for Hardened Metals, Stainless Steel, Cast Iron and Wooden Plastics, with Metal Index Storage Box,1/16"-1/2", A-Z, #1-#60

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Key Features

  • ✅ 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: 115 sets of drill bits include 29pcs Fractional Size:1/16” to 1/2” in 1/64th increments; 26pcs Letter Size: A To Z; 60pcs Numbered Size: #1 To #60.
  • ✅ 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.

Product Details

Brand:SEDIANAS
Model:115 PCS Cobalt Drill Bit Set
Color:115 pcs Cobalt

GMTOOLS 115Pcs Cobalt Drill Bits Set, M35 High Speed Steel, 135 Degree Tip, Twist Jobber Length Drill Bit Kit for Hardened Metal, Plastic and Wood with Metal Indexed Storage Case, 1/16"-1/2"

Image of GMTOOLS 115Pcs Cobalt Drill Bits Set, M35 High Speed Steel, 135 Degree Tip, Twist Jobber Length Drill Bit Kit for Hardened Metal, Plastic and Wood with Metal Indexed Storage Case, 1/16"-1/2"

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Key Features

  • ✅ 115 Pieces Set Includes: 29pcs Fractional Size: 1/16 to 1/2 inch bits in 1/64th increments; 26pcs Letter Size: A To Z; 60pcs Numbered Size: #1 To #60; Set includes the drill bit holder with size index for easy storage and organizing
  • ✅ Perfect Drill Bits: Precision grinding process for a clean surface and high grinding accuracy. Universal round drill shank, widely applicable of tool holding systems and tightly clamped
  • ✅ 135° Split Point & Twist Design: The 135 degree fast cutting point is automatically centered and penetrates quickly with less pressure, reducing walking, fully ground drill bit with sharp and durable cutting edge. Twist design for clear chips faster
  • ✅ Enhanced M35 Alloy Material: These drill bits contain 5% Cobalt alloy steel, which increases wear resistance and durability. Industry grade 6542 high speed steel drill bit set, harder than 4241 HSS used in other similar drill bits set
  • ✅ QUALITY COMMITMENT: If for any reason you are not satisfied with your purchase, please contact us. We provide 30-day money back. 100% Satisfaction Guarantee for risk-free shopping!

Product Details

Brand:GMTOOLS
Size:115Pcs

CaRoller Cobalt Drill Bit Set 115 PCS, High Speed Steel M35 Drill Bits Durable Round Shank Drill Sets for Hardened Steel, Wood Plastic, Sheet Metal, with Metal Index Storage Box (115pcs Cobalt)

Image of CaRoller Cobalt Drill Bit Set 115 PCS, High Speed Steel M35 Drill Bits Durable Round Shank Drill Sets for Hardened Steel, Wood Plastic, Sheet Metal, with Metal Index Storage Box (115pcs Cobalt)

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Key Features

  • ✅ 【115 PCS Drill Bit Set 】29pcs Fractional Size: 1/16 to 1/2 inch bits in 1/64th increments; 26pcs Letter Size: A to Z, 60pcs Wire Size: #1 to #60, Metal index storage box for easy carry and organizing.
  • ✅ 【Drill Bits】Whether a professional woodworker, handyman, or construction worker, or you simply enjoy the occasional house project as a relaxing hobby, the CaRoller metal drill bit set for steel are an excellent assortment for ensuring perfect holes and plugs!
  • ✅ 【Cobalt Drill bit Set】 The drill bit is made with durable material containing 5% Cobalt alloy steel, which ensures long-lasting use and superior wear resistance! suitable for cutting stainless steel, cast iron, high-temperature alloy, titanium alloy, hard plastics, and wood.
  • ✅ 【Versatile Functions】 Featuring a 135-degree split point with a round straight shank, an intelligent self-centering design that prevents walking, fully ground twist design ensuring a cooler drilling performance by decreasing friction, The 115pcs impact drill bit set easily drills through a wide variety of materials.
  • ✅ 【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 metal size index storage box with a built-in clip, easily attaching to your tool belt and keeping your bits within immediate reach!

Product Details

Brand:CaRoller
Model:HSD91-115C
Size:115pcs Cobalt
Dimensions:14.6 X 5 X 2.9 Inches

Drill America 115 Piece m35 Cobalt Drill Bit Set (1/16"-1/2", A-Z, #1-#60), DWDCO Series

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Key Features

  • ✅ 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
  • ✅ 115 piece drill bit set comes in a metal case

Product Details

Brand:Drill America
Model:DWD115J-CO-SET
Size:Set
Dimensions:N/A X N/A X N/A in

EASTPACE 115Pcs M35 Cobalt Drill Bit Set, Twist Jobber Drill Bit Kit for Stainless Steel, Hard Metal and Wood Plastic with Indexed Metal Case (A-Z, 1-60,1/16 Inch-1/2 Inch)

Image of EASTPACE 115Pcs M35 Cobalt Drill Bit Set, Twist Jobber Drill Bit Kit for Stainless Steel, Hard Metal and Wood Plastic with Indexed Metal Case (A-Z, 1-60,1/16 Inch-1/2 Inch)

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Key Features

  • ✅ Premium True 5% Cobalt Steel: Industry grade heavy-duty drill bit set include 5% Cobalt, which increases wear-resistance and durability, perfect for precise drilling hard materials, including stainless steel, cast iron, and hardened steel.
  • ✅ Fast and Efficient: 135° Split Point Design and Fully Ground Process for faster cutting, self-centering to prevent walk-off, and faster chip and particle removal.
  • ✅ 115 Pieces Drill Bit Set Includes: covers 29 fractional sizes, 26 letter sizes, and 60 numbered wire gauges from #1 to #60. With a index metal box keeps them easier organized and accessible anytime.
  • ✅ Wide Application: Perfectly suitable for cutting through Hard Metal such as Stainless Steel, Steel, Sheet Metal and Cast Iron as well as Plastic, Aluminum Alloy, Wood and Other Softer Metals.
  • ✅ Warms Tips: Pay attention to speed, pressure and heat control during drilling. If you have any questions, please refer to us and we will happy to serve you.

Product Details

Brand:EASTPACE
Size:115Pcs Cobalt Drill
Dimensions:13.2 X 4.75 X 2.58 inches

COMOWARE 115Pcs M35 Cobalt Drill Bit Set - 5% Cobalt HSS Metal Bits for Hardened Steel/Stainless/Cast Iron/Wood/Plastic, Titanium Coated 1/16"-1/2" with Metal Indexed Case (Professional Grade)

Image of COMOWARE 115Pcs M35 Cobalt Drill Bit Set - 5% Cobalt HSS Metal Bits for Hardened Steel/Stainless/Cast Iron/Wood/Plastic, Titanium Coated 1/16"-1/2" with Metal Indexed Case (Professional Grade)

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Key Features

  • ✅ [115-Piece M35 Cobalt Drill Bit Set] Includes 29 fractional (1/16”-1/2” in 1/64 increments), 26 letter (A-Z), and 60 numbered (#1-#60) bits. Ideal for precision drilling in hardened steel, stainless steel, cast iron, wood, and plastics. Titanium coating enhances surface durability and corrosion resistance.
  • ✅ [5% Cobalt HSS Drill Set for Heavy-Duty Use] Made with industrial-grade M35 HSS steel (5% cobalt), these drill bits outperform standard HSS in heat resistance and lifespan. Perfect for high-speed drilling in tough metals, alloys, and dense materials without dulling or breaking.
  • ✅ [135° Split Point Titanium Coated Drill Bits] The 135° self-centering split point design eliminates bit walking and starts holes cleanly. Reduced friction and titanium coating ensure smooth drilling in stainless steel, cast iron, wood, and hard plastics.
  • ✅ [Pro-Grade Metal & Wood Drill Bit Set] Engineered for professionals and DIYers, this M35 cobalt HSS set tackles hardened metals, titanium alloys, and wood/plastic with ease. Durable titanium coating resheathes wear for extended use.
  • ✅ [Metal Index Case for Instant Access] Organize all 115 bits in the labeled metal case. Size markings and shockproof slots keep bits secure, portable, and ready for any project—workshop, jobsite, or home garage.

Product Details

Brand:COMOWARE
Model:CN-Cobalt Bit-115P
Size:115-piece

M35 5% Cobalt Drill Bits Set 115PCS (1/16"-1/2", A-Z, 1-60), Straight Shank Jobber Drill Bits, Metal HSS Twist Drill Bits for Stainless Steel Hard Metal and Cast Iron

Image of M35 5% Cobalt Drill Bits Set 115PCS (1/16"-1/2", A-Z, 1-60), Straight Shank Jobber Drill Bits, Metal HSS Twist Drill Bits for Stainless Steel Hard Metal and Cast Iron

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Key Features

  • ✅ 【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.
  • ✅ 【115PCS SAE DIRLL BITS SET】The set includes 29pcs Fractional Size:1/16” to 1/2” in 1/64th increments; 26pcs Letter Size: A To Z; 60pcs Numbered Size: #1 To #60. 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.
  • ✅ 【PROFESSIONAL AND WIDELY USED】M35 Cobalt High Speed Steel is more suitable for hardening materials. Ideal for cutting stainless steel, steel and cast iron as well as wood, aluminum alloys and other metals. Not suitable for glass or ceramic materials. Pay attention to speed, pressure and heat control when drilling.
  • ✅ 【SERVICE】If you have any problem with our metric drill bit set or are not satisfied with the product, please feel free to contact WildBossy.

Product Details

Brand:WildBossy
Model:YZZT-115pcs
Size:1/16-1/2 inch, A-Z, #1-60 - 115 PCS - Right Hand
Dimensions:14 X 5 X 2.8 Inches

Accusize Industrial Tools - 115 Pc M35 H.S.S. Plus 5% Cobalt Drill Bit Set, Professional, 135° Split Point, Sizes 1/16'' to 1/2'', #1-60, A-Z, 0422-1003

Image of Accusize Industrial Tools - 115 Pc M35 H.S.S. Plus 5% Cobalt Drill Bit Set, Professional, 135° Split Point, Sizes 1/16

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Key Features

  • ✅ Enhanced Durability: M35 H.S.S. with 5% Cobalt, featuring aggressive 135° split points for longevity and speed in hard materials like stainless steel.
  • ✅ Comprehensive Range: 115 pieces including sizes from 1/16'' to 1/2'', #1-60, and A-Z, ensuring versatility for all drilling needs.
  • ✅ Precision Engineering: Fully ground, straight shank bits for accurate, reliable drilling.
  • ✅ Professional Grade: Ideal for heavy-duty drilling in industrial applications, offering superior performance and strength.
  • ✅ Organized Storage: Comes in a sturdy metal box for convenient storage and easy access.

Product Details

Brand:Accusize Industrial Tools
Model:0422-1003
Size:1/16-1/2", No 1 to 60 and A to Z, 115 pcs
Dimensions:5.905511805 X 3.93700787 X 14.960629906 Inches
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