General description Shower Door Roller Set of 8: Includes 4 upper rollers and 4 lower rollers, 8 in total; comes with screws and a plastic cover. Suitable for glass shower doors, shower enclosure doors, massage cabin doors, or sliding furniture accessories. Technical specifications Wheel size: approximately 23 mm in diameter Width: 6 mm Maximum glass thickness: 6 mm Distance from the center of the mounting hole to the edge of the glass: approximately 6 mm Material: brass and ABS plastic Installation The bathroom slider is easy to move and install, keeps the door balanced and allows the door to slide with minimal effort.