Iimveliso zethu ezichasene nokukhulula izikrufu zamkela iikhonsepthi zoyilo oluphambili kunye neenkqubo zokuvelisa ukubonelela abathengi ngezisombululo ezibalaseleyo zokuchasa ukukhulula. Le mveliso ixhotyiswe ngokukodwa nge-nylon patch, enokuthi ithintele ngokufanelekileyo i-screws ukuba ikhululeke ngokwabo, iqinisekisa ukuba izixhobo zizinzileyo kwaye zithembekile ngexesha lokusebenza.
Ngokusebenzisa isakhiwo sentloko esingeyiyo eyenzelwe kakuhle, i-screws yethu yokuchasana ayinakukwazi nje ukuba nefuthe elichasayo, kodwa ikhusela ngokufanelekileyo abanye ukuba basuse ngokulula. Olu luyilo lwenza ukuba izikrufu ziqine ngakumbi emva kokufakwa, okunika isiqinisekiso esiqinileyo sokusebenza kwexesha elide elizinzileyo lezixhobo.