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

Product Highlights

  • ✅ 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.

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

Image of 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

Product Highlights

  • ✅ 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.

MACXCOIP 115Pcs Cobalt Drill Bit Set M35 HSS Jobber Length

Image of MACXCOIP 115Pcs Cobalt Drill Bit Set M35 HSS Jobber Length

Product Highlights

  • ✅ 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
  • ✅ 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 M35 Drill Bit Set: HSS Jobber Length Drill Bit Kit for hardened steel with excellent cutting performance. 115 sets of drill bits for long term use. The inserts are hardened and polished for improved sharpness and precise cutting without wobbling

COMOWARE Cobalt Drill Bit Set 115Pcs M35 High Speed Steel Twist

Image of COMOWARE Cobalt Drill Bit Set 115Pcs M35 High Speed Steel Twist

Product Highlights

  • ✅ M35 Cobalt HSS Drill Bit Set - Made of high-speed steel with 5% cobalt for superior wear, heat & abrasion resistance. These cobalt drill bits for hardened steel deliver longer lifespan in stainless steel, cast iron & hard alloys versus standard HSS.
  • ✅ Set Includes - The set includes 115Pcs (1/16" to 1/2" in 1/64" increments) Cobalt Drill Bits, This cobalt drill bit also includes the drill bit holder with size index for easy storage and organizing.
  • ✅ 135° Split Point HSS Drill Bits - This drill bits set feature self-centering 135° quick-cut tips for effortless penetration with minimal pressure. The twisted shank design efficiently clears metal shavings, making them ideal for materials.
  • ✅ Professional & Widely Use - This cobalt drill bit excels in drilling stainless steel, copper, cast iron, aluminum alloy, plastic and wood. Engineered for precision, these drill bits deliver unmatched durability across metalworking applications.

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)

Product Highlights

  • ✅ 【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.

Sabre Tools 115-Piece Cobalt Drill Bit Set – Drill Bits for Metal, M35 Cobalt Metal Drill Bit Set, Split Point Cobalt Drill Bits, Heavy-Duty Drill Bits for Steel, Hard Metal, Cast Iron (Cobalt 115pcs)

Image of Sabre Tools 115-Piece Cobalt Drill Bit Set – Drill Bits for Metal, M35 Cobalt Metal Drill Bit Set, Split Point Cobalt Drill Bits, Heavy-Duty Drill Bits for Steel, Hard Metal, Cast Iron (Cobalt 115pcs)

Product Highlights

  • ✅ 115-Piece Set Includes: 29pcs Fractional Size: 1/16” to 1/2” inch bits in 1/64" increments; 26pcs Letter Sizes: A To Z; 60pcs Numbered Size: #1 To #60
  • ✅ Compatible with drills and drill presses
  • ✅ Heavy-Duty Material: Our drill bits for hardened steel feature a heavy-duty construction made with M35 cobalt, (5% Cobalt) which has excellent durability and superior resistance against abrasion and high heat.
  • ✅ Pilot Point Tip: These cobalt drill bits feature a pilot point tip that prevents slipping and can help increase drilling speed while ensuring smooth and easy penetration through hard metals.

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)

Product Highlights

  • ✅ [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.

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)

Product Highlights

  • ✅ 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.

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

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

Product Highlights

  • ✅ 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

GuardPro 115Pcs Cobalt Drill Bits Set, 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 GuardPro 115Pcs Cobalt Drill Bits Set, 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"

Product Highlights

  • ✅ 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 organising.
  • ✅ Features: round straight shank, self-centering design prevents walking, fully ground twist design ensures a drilling performance by decreasing friction, easily for drilling materials includs stainless steel, cast iron, alloy, wood and hard plastics.
  • ✅ 135°Split Point: 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.
  • ✅ A Must For Professionals: Drill Bit Set 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 for steel are an excellent assortment for ensuring perfect holes and plugs!
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