I-drill chuck yi-clamp ekhethekileyo esetyenziselwa ukubamba i-bit ejikelezayo;ngenxa yoku, ngamanye amaxesha ibizwa ngokuba yi-bit holder.Kwi-drill, ii-chucks zihlala zinemihlathi emininzi ukukhusela i-bit.Kwezinye iimodeli, udinga isitshixo se-chuck ukukhulula okanye ukuqinisa i-chuck, ezi zibizwa ngokuba yi-keyed chucks.Kwezinye iimodeli nangona kunjalo, awukho mfuneko yesitshixo kwaye unokukhulula ngokulula okanye uqinise i-chuck ngezandla zakho, ezi zibizwa ngokuba zii-keyless chucks.Phantse zonke iidrili ezingenazintambo zixhotyiswe ngee-chucks ezingenazitshixo.Nangona ukusebenza ngee-chucks ezingenazitshixo zikhethwa ngakumbi ngenxa yokulula kwazo, ii-chucks ezinezitshixo zibonelela ngokhuseleko ngakumbi ngakumbi kwizicelo ezinzima.