Fully hardened and tempered for extended bit life under constant heavy-duty use. The tip is precision formed for proper fit. Use when driving heat-treated or case-hardened screws such as sheet metal, self-tapping or self-drilling.
- Made of the highest quality S2 tool steel for durability
- A proven sub-zero tempering process gives these bits long life
- (2) 5/16 in. x 1 in. Allen B Insert Bits - AL516102