Astro Tools TS21 Onyx 21pc TurboStep HSS Drill Bit Set
Set of spiral fluted, patent-pended stepped-tip drill bits for metal, wood, and alloys. Patented design reduces bit walk and eliminates need for pilot holes. Precise ground from M2 high-speed steel with Onyx oxide coating
Highlights
- patented stepped-tip for easy starts
- eliminates need for pilot holes
- M2 HSS with Onyx coating
Pros
- patented stepped-tip design
- reduces bit walk
- supports drilling into hard alloys and sheet metal
- high-speed steel with protective coating
- quality and efficiency praised by customers
Cons
- mixed durability reports on steel
- some impressions of rapid dulling
Best For
Features
- Patent-pended stepped-tip drill bits reduce bit walk and require no pilot holes
- Made from heat-treated M2 high-speed steel with Onyx oxide coating to reduce chip build-up
- Mechanics length with three-flat shanks for access in cramped spaces
- Effective on hard alloys, sheet metal, and imperfect starting holes
