Flex Coat Cork Grip Pilot Drill Bits, These tools are made from spade bits with an aluminum pilot on the tip. When used with a hand drill the result is a perfectly centered hole. Flex Coat Pilot Drill Bits are available in 5/16”, 3/8”, 7/16”, 1/2”, 9/16”, & 5/8”
Flex Coat Cork Grip Pilot Drill Bit