Ama-roll on vials amabhodlela amancane okulula ukuwaphatha. Ngokuvamile zisetshenziselwa ukuthwala amafutha abalulekile, amakha noma eminye imikhiqizo ewuketshezi. Ziza namakhanda ebhola, okuvumela abasebenzisi ukuthi bagiqe imikhiqizo yohlelo lokusebenza ngqo esikhumbeni ngaphandle kwesidingo seminwe noma amanye amathuluzi okusiza. Lo mklamo uhlanzekile futhi kulula ukuwusebenzisa, okwenza i-roll on vials idume ekuphileni kwansuku zonke.