Isibungu siyi-cylindrical, shaft enentambo ene-helical groove esikwe phezu kwayo. Igiya lezikelemu isondo elinamazinyo elihlangana nesikelemu, liguqule ukujikeleza kwesibungu kube ukunyakaza okuqondile kwegiya. Amazinyo egiyeni lezikelemu asikwa nge-engeli ehambisana ne-engeli ye-helical groove esibungwini.
Emshinini wokugaya, igiya lezikelemu nezikelemu zisetshenziselwa ukulawula ukunyakaza kwekhanda lokugaya noma itafula. Isibungu ngokuvamile sishayelwa injini, futhi njengoba siphenduka, sihlangana namazinyo egiya lezikelemu, okwenza igiya lihambe. Lokhu kunyakaza kuvame ukunemba kakhulu, okuvumela ukuma okunembile kwekhanda lokugaya noma itafula.
Enye inzuzo yokusebenzisa isikelemu kanye negiya lezikelemu emishinini yokugaya ukuthi inikeza izinga eliphezulu lenzuzo yomshini, okuvumela injini encane ukushayela isibungu kuyilapho ifinyelela ukunyakaza okuqondile. Ukwengeza, ngenxa yokuthi amazinyo egiya lezikelemu ahlangana nesikelemu endaweni engashoni, kuba nokungqubuzana okuncane nokuguga kwezingxenye, okuholela empilweni ende yesevisi yohlelo.