Bosch Drill Bits 4 in. 120 mm Cobalt 1/4 Hex Pilot Drill PCPD4

Bosch PCPD4 is for heavy duty drilling in extremely hard or abrasive materials. Can be used with Bosch mandrel models PCM38, PCM12 and PCMSDSPL. One mandrel is all you need with the Bosch Power Change bi-metal hold saw system. Featuring Progressor Tooth Geometry, combining cutting teeth with specially designed chip-removal teeth for super-fast cutting action in metal and wood.