Amacandelo asebenzayo kunye nezixhobo eziqhubekayo zeplastiki deformation yentsimbi kwiilitye lokusila.
Umqulu wenziwa ikakhulu ngumzimba oqengqelekayo, intamo eqengqelekayo kunye nentloko yeshaft.
Umzimba wokuqengqeleka yinxalenye ephakathi yomqulu eneneni ebandakanyekayo ekuqengqelekeni kwesinyithi.