Modified relief angles on a 135° point penetrate the workpiece easier while maintaining a durable outside cutting edge
Titanium CarboNitride (TiCN) coating improves heat resistance and reduces wear to the cutting edges; outperforms Titanium Nitride (TiN) coatings
Three-flute design removes chips effectively
Three flats are ground on the shanks (size 1/4" and greater) to reduce the chances of slippage and breaking
No cutting fluids are needed for Cobra™ Drill Bits
For use on heat-treated, hardened material up to Rc 65
Recommended for drill press operation only
NOTE: Cobra™ Drill Bits should be run at higher speeds than standard high-speed steel twist drills. It is also recommended that a woodpeckering technique be used to prevent chips from clogging in the flutes.
CAUTION: Any cutting tool may break or shatter under improper use. Government regulations require use of safety glasses and other appropriate safety equipment at all times in the vicinity of use.