Great on hard alloys, sheet metal, and difficult-to-drill items.
Spiral-fluted stepped-tip drill bits outperform every conventional drill bit design in nearly all materials. They eliminate bit walk and the need for pilot holes. Bits are precision ground from heat-treated quality M2 High Speed Steel and Onyx-oxide coated to prevent chip build-up, and feature three-flat shanks for extra secure hold in the chuck. Reduced shanks above 3/8". Mechanic’s length for superior access in tight spaces.
1/16" - 1/2".