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Durable Pieces: Hardened Stainless Steel for Woodwork and Plastic Materials Review

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Revainrating 3.5 out of 5  
Rating 
3.3
🪚 Industrial Drill Bits, 🔪 Cutting Tools

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Description of Durable Pieces: Hardened Stainless Steel for Woodwork and Plastic Materials

Quality material: the cobalt drill bit set uses cobalt M35 high speed steel as material, this material is durable, strong and practical, with a long service life, heat and abrasion resistance; The cutting edge of drill bit is hardened and honed, with accurate cutting without shaking. Creative twist design: metal cobalt drills for hardened steel has 135° split point tip and torsional design to improve cutting speed with self-centering ability; They can avoid walking during work process, while clearing chips and particles more quickly and easily. Nice features: the 1/8 inch twist drill bits have precise diameter; M35 cobalt drill bits for hardened metal are not easy to break or wear out, so suitable for lithium electric drill, hand electric drill, impact electric drill, etc.; The size is small, please pay attention to use. Various fitness: M35 high speed steel cobalt drill set is greatly suitable for hardened material and hard metals, such as cast iron, high temperature alloy, hard plastics, stainless steel, titanium alloy, woods, etc. also for soft materials. What you will get: the package contains 15 pieces 1/8 inch cobalt drill bits, sufficient quantity to meet your various needs; Please pay attention to speed, pressure and heat control during drilling.

Reviews

Global ratings 3
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Type of review

Revainrating 3 out of 5

Size can be an issue

When you need precision, this might not be for you. The size they ship is a metric, not a true fraction, so they may vary slightly from your goals. For a club like me, they're mostly fine.

Pros
  • Different Suitability: M35 HSS Cobalt Drill Set is excellent for hardened materials and hard metals such as cast iron, heat resistant alloys, hard plastics, stainless steel, titanium alloys, wood, etc. as well as for soft materials
Cons
  • Drill Pack

Revainrating 2 out of 5

Not what I expected

I bought this last year, this month I had the opportunity to try it on a new steel case, I thought the cost of cobalt drill bits is good, until I used it. I borrowed a slightly larger drill bit from my brother and it drilled through the purlins much quicker. In my opinion it was a bad buy.

Pros
  • Nice Features: 1/8" twist drill bits are exact diameter; M35 hardened metal cobalt drill bits are not easy to break or wear out, so they are suitable for lithium electric drill, electric hand drill, electric impact drill etc.; The size is small, please pay attention to the use of
Cons
  • Very expensive

Revainrating 5 out of 5

Good Value for Power Tool Parts and Accessories

I see some comments about how quickly these drills wear out. Taste the oil and take the time to go slowly. I used a 3 5/64" to drill about 40 holes in 1/16" 304 stainless steel. None of these broke (I used a low speed drill and a vise). You may not have much luck using these bits in a hand drill. The use of a drill is strongly recommended. Insert the drill into the drill chuck as far as possible. The drill chuck absorbs heat from the drill.

Pros
  • Quality Material: The cobalt drill bit set uses M35 cobalt high speed steel as the material, this material is strong, durable and practical, with long service life, heat resistance and abrasion resistance; The cutting edge of the drill is hardened and honed with a precise cut without jarring
Cons
  • No Automatic