12pcs 3/8" cobalt drill bits for metal
Price tier: Mid-Range
Check price on Amazon →
Cobalt drill bits set (12 pcs, 3/8") for metal, stainless steel, cast iron, wood, and plastic. High wear resistance and heat hardness due to M35 cobalt alloy; suitable for high-speed cutting. Customers note solid quality and value, with some reports of dulling over time
Highlights
- m35 cobalt alloy
- high hardness and wear resistance
- fits multiple materials
Pros
- 12-piece cobalt bit set
- M35 cobalt alloy for wear resistance
- high-temperature hardness
- suitable for multiple materials
- good value for money
Cons
- some users report bits dulling with use
Best For
Features
- Cost-effective combination A total of 12pcs 3/8" cobalt drill bits
- multiple quantity combinations can meet your extensive cutting needs.
- Material composition and characteristicsOur cobalt drill bits are made of M35 material. M35 is an alloy of cobalt high-speed steel (HSS)
- that with a high proportion of cobalt (5%)
- which gives it excellent wear resistance and high-temperature hardness. This material maintains toughness and strength at high temperatures
- and it is suitable for high-speed cutting and drilling of complex materials. The heat treatment can achieve high hardness (HRC65. 5-68)
- so the drill bit can still maintain high hardness and wear resistance at high temperatures.
- Cutting performanceM35 cobalt drill bits perform well when cutting harder metals (such as stainless steel
