Le sethi yabakaki isetshenziselwa ukuvikela ibhokisi eliphakathi nendawo ekhabetheni le-roller futhi livimbele ukuthi lingaphumi lapho lisuka endaweni eyodwa liya kwenye.
Le sethi yabakaki isetshenziselwa ukuvikela ibhokisi eliphakathi nendawo ekhabetheni le-roller futhi livimbele ukuthi lingaphumi lapho lisuka endaweni eyodwa liya kwenye.