IRWIN 3/8 COBALT DRILL BIT

IRWIN 1/2 COBALT DRILL BIT

High-speed steel with M-35, 5% cobalt, for higher heat and abrasion resistance; heavy-duty web construction for strength and durability. Split point begins drilling immediately, minimizing bit walk when used in applications such as metal drilling, including heavy-duty abrasive alloy metal drilling on hardened steel (heat-treated).

15/32 MIBRO COBALT BIT

COBALT BIT 135SP 15/32

COBALT BIT 135SP 31/64

COBALT BIT 135SP 1/2