1/2 inch HSS M35 cobalt twist drill bits (5-pack) for hard metals
M35 cobalt twist drill bits made of high-speed steel for drilling hard metals. sharp design with 135° tip for self-centering and faster cutting; suitable for steels, cast iron, stainless steels, and other hard metals. customers note good quality and durability but mixed opinions on edge retention
Highlights
- 5% cobalt alloy for durability
- 135° tip for self-centering
- broad metal compatibility
Pros
- high-speed steel with 5% cobalt
- sharp cutting edges and 135° tip design
- good wear resistance and durable construction
- includes multiple hard-metal applications
- effective chip removal
Cons
- mixed reports on edge retention/dullness
- some users report bit breakage during use
Best For
Features
- M35 steel with 5% cobalt, 1/2 inch size, 150 mm total length, 110 mm work length
- Sharp blades for fast drilling in steels, cast iron, copper, galvanized pipe, aluminum alloy, wood
- Full-grinding nitriding for wear resistance and durability, with spiral groove design
- 135-degree tip with twist design for self-centering, reduces walking and increases cutting speed
- Suitable for professional and DIY use, supports household maintenance and repair tasks
