Pilot Drill Bit, Pilot Bit Size 1/2 in, Pilot Bit Shank Style Hex, Pilot Bit Shank Size 1/4 in, Pilot Bit Overall Length 2 1/2 in, Pilot Bit Material Cobalt-Steel, For Use On Aluminum, Copper, Stainless Steel, Steel. This item has been restricted from sale in the following state (s): []