Century Drill & Tool 26220 5/16" Pro Grade Cobalt Drill Bit

Century Drill and Tool
5/16" Pro Grade Cobalt Drill #26220
Features
Made from M42 steel with 8% cobalt, designed to be tough enough to cut through extremely hard metals, including stainless steel
No Center Punch Needed! 135?? quick-cut points are self centering and penetrate faster with less pressure. Will NOT walk or wander on surface
Extremely heat resistant. MUST be used and operated in powered units that have an RPM of 1,500 or more for maximum efficiency
Aerospace NAS 907-J Specifications