K72 letoto la Four-mohlahare o ikemetseng chuck A mofuta

K72 letoto la lihlooho tse 'nè tse ikemetseng tsa li-cylinder le li-cylinder tse khutšoane tsa selikalikoe,Sebōpeho se sekhutšoanyane sa cone se ka aroloa ka mefuta e' meli ho latela mokhoa oa ho kopanya le molamu oa mochine oa mochine: Mofuta oa A (o kopantsoe le screw), Mofuta oa C (Lenonyeletso la ho notlela bolt), Mofuta oa D(Tlapa ea ho hula, lenonyeletso la ho notlela khamera).