Tooling Drill Size Equivalent:
Tooling System Of Measurement:
Manufactured By:
Walter Surface
- 1/2" reduced shank
- 3-flats shank for reduced slippage in drill chucks
- Cobalt drills can drill approximately 30% faster than HSS drills
- Made with premium grade cobalt HSS to drill harder materials
- Self centering 135° split-point for reduced thrust requirements and minimized walking
- Special bronze SST surface treatment for extreme lubricity and life
For high tensile steel, fits in a 1/2" chuck