Izibiyeli ziyinxalenye ebalulekileyo yokufaka kunye nokufaka iimfama.Izibiyeli zibamba iimfama ngokukhuselekileyo kwindawo efunwayo, nokuba ludonga, ifreyimu yefestile okanye isilingi.Babonelela ngokuzinza kunye nenkxaso, babambe iimfama endaweni kunye nokukhusela ukuba bangabikho okanye bawa.Kukho iintlobo ezahlukeneyo zeebakaki, ezifana nezibiyeli zokunyuka zangaphakathi, ezisetyenziselwa ukufezekisa ukujonga okudibeneyo kwi-recess yefestile;izibiyeli zokuxhoma zangaphandle, ezibonelela ngokhuseleko olukhulu ngaphandle kwesakhelo sefestile;kunye nezibiyeli zesilingi, ezisetyenziselwa ukunyusela iimfama kwisilingi engentla.Ngokufakela izibiyeli ngokuchanekileyo kwaye uzikhusele nge-screws okanye enye i-hardware, iimfama zihlala kwindawo kwaye zisebenza ngokufanelekileyo, zivumela ukusebenza kakuhle kunye nokulungelelanisa iimfama njengoko kufuneka.