Umphezulu we-roller yempembelelo yenziwe ngumgangatho oshushu werabha owenziweyo, oneempawu zokungagugi, ukuchasana nokuguga, akukho ngxolo, i-anti-static, ukuqina okuphezulu, ukuzithambisa, ukukrazula ibhanti lokuhambisa, ukunciphisa ukuxhathisa kunye nokusetyenziswa kwamandla aphantsi kuthutho lomgama omde. Ifakwe phantsi kwecandelo lokufumana umqhubi ukunciphisa impembelelo yebhanti yokuhambisa kunye nokwandisa ubomi benkonzo yebhanti yokuhambisa.