Diablo® DHS4BITCB Cobalt Pilot Drill Bit for Hardened Metals, 4 in

Diablo®, DHS4BITCB, Pilot Drill Bit, High Performance, Hex Shank, 1/4 in Shank, 9/32 in Diameter Hole Saw, 4 in Overall Length, Applicable Materials: Cast Iron/Metal/Stainless Steel