115Pcs Cobalt Drill Bit Set with Index Case
Cobalt M35 HSS drill bit set (1/16"–1/2", 135°) for hardened metal, stainless steel, cast iron, wood, and plastics. Self-centering design and fully ground twist for smoother drilling; customer notes quality and value
Highlights
- M35 cobalt alloy for heat resistance
- large size range: 1/16" to 1/2" and mixed sizes
- index storage case for organization
Pros
- includes mixed fractional, letter, and numbered bits
- coated with cobalt for heat and wear resistance
- self-centering design reduces walking during drilling
- fully ground twist and 135° tip for clean penetration
- index storage case for organization
Cons
- no explicit lifetime warranty mentioned
- customer feedback references price value but no numerical rating detail
- may require careful handling of diverse bit sizes
Best For
Features
- Includes 29 fractional sizes 1/16 to 1/2 in 1/64 increments, 26 letter sizes A to Z, and 60 numbered sizes #1 to #60
- Made of M35 high-speed steel with 5% cobalt for improved heat and wear resistance
- Round straight shank with self-centering design to prevent walking and reduced friction
- 135-degree split point for automatic centering, fast penetration, and smooth debris removal
- Includes an index storage case for organization and easy access
