Ama-uprights enziwe ngamashubhu ayisikwele angu-3mm awugqinsi, kuyilapho amanye amashubhu asebenzisa ukujiya okungu-2.5mm, okuqinisekisa ukuzinza nokwethembeka ngesikhathi sokusetshenziswa.
Umqondo womklamo wesistimu ESISEKELWE ESIKHUNGO usekelwe esidingweni sokulungiswa kwephansi kuphela, okuvumela ukubekwa phakathi nendawo yesikhungo noma iphaseji.Yakhelwe phezu kwamashalofu esitoreji anamazinga amaningi, ikhulisa iziteshi zokuqeqesha ezisebenzayo ezihlukahlukene kanye nokusetshenziswa kwendawo.
