Drill chuck ndi chotchinga chapadera chomwe chimagwiritsidwa ntchito pogwira pozungulira;chifukwa cha ichi, nthawi zina amatchedwa bit holder.Pobowola, chucks nthawi zambiri amakhala ndi nsagwada zingapo kuti ateteze pang'ono.Mumitundu ina, mumafunika fungulo la chuck kuti mumasule kapena kulimbitsa chuck, izi zimatchedwa ma keyed chucks.Mumitundu ina, mulibe kiyi ndipo mutha kumasula kapena kumangitsa chuck ndi manja anu, izi zimatchedwa keyless chucks.Pafupifupi zobowolera zopanda zingwe zili ndi ma chucks opanda ma key.Ngakhale kugwira ntchito ndi ma chuck opanda makiyi kumakondedwa kwambiri chifukwa cha kuphweka kwawo, ma chucks a keyed amapereka chitetezo chochulukirapo makamaka pamapulogalamu olemera.