5% cobalt and heavy-duty web construction for higher heat and abrasion resistance, strength and durability. Split point begins drilling immediately, minimizing bit walk in applications such as heavy-duty abrasive alloy metal drilling on hardened steel. Jobber length.

Constructed of M-42 8% cobalt high-speed steel for super abrasive resistance in tough metals. Bits have a 135 deg split point which reduces feed pressure for easier penetration. Includes (2) 1/16 in, (2) 5/64 in, 3/32 in, (2) 7/64 in, 1/8 in, (2) 9/64 in, 5/32 in, 3/16 in, 7/32 in, 1/4 in, 5/16 in, 3/8 in and (1) rubber-sided case with sliding latch for added security.

IRWIN 1/16"COBALT DRILL BIT

IRWIN 5/64 COBALT DRILL BIT

IRWIN 3/32 COBALT DRILL BIT

IRWIN 7/64 COBALT DRILL BIT

IRWIN 1/8 COBALT DRILL BIT

IRWIN 9/64 COBALT DRILL BIT

IRWIN 5/32 COBALT DRILL BIT

IRWIN 11/64 COBALT DRILL BIT CAR

IRWIN 3/16 COBALT DRILL BIT

IRWIN 7/32 COBALT DRILL BIT

IRWIN 1/4 COBALT DRILL BIT

IRWIN 9/32 COBALT DRILL BIT

IRWIN 5/16 COBALT DRILL BIT