Muaj ntau ntau yam sib txawv ntawm cov phaj xauv, txhua tus muaj nws tus kheej tshwj xeeb thiab kev siv. Qee yam ntawm cov khoom siv feem ntau muaj xws li Ncaj nraim xauv daim hlau, Curved locking daim hlau, T-phaj xauv daim hlau, L-phaj xauv daim hlau, Distal locking daim hlau, Proximal locking daim hlau thiab lwm yam.