As a standard three/eight″ keyless chuck, the only thing unique Here's the chance to take away it from the drill. Use this with any regular spherical bits, but stay with the other chucks for hex bits. The keyless chuck suits on the base Instrument or maybe the right angle http://gunnersbktb.alltdesign.com/bosch-12-volt-cordless-drill-menards-no-further-a-mystery-15187251