General description Set of 8 adjustable shower door rollers (4 top and 4 bottom) designed for bathroom and shower doors. These rollers feature a spring mechanism and are compatible with curved doors, providing smooth operation and flexibility. Technical specifications Diameter of rollers: 25 mm Width of rollers: 6 mm Minimum hole size in the glass: 11 mm Maximum thickness of tempered glass: 6 mm Upper wheel dimensions: Height: 35 mm, Width: 27 mm Lower wheel dimensions: Height: 33 mm, Total height with knobs: 42 mm, Width: 27 mm Suitable glass thickness: 4-6 mm glass, 9.5-14 mm glass hole Compatibility and accessories Comes with screws and plastic covers Can clamp other glass sizes by cutting off the connecting belt of the glass tank Installation Adjustable pulley can be modified by turning the screw clockwise or counterclockwise with a screwdriver Glass size can be shortened or lengthened during installation Usage Upper wheel can be turned left and right for adjustment Lower wheel