Muaj ntau ntau hom kev xauv daim hlau, txhua tus muaj nws tus kheej cov yam ntxwv 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.