General description Pack of 8 shower door rollers (4 upper and 4 lower) designed for smooth operation of bathroom shower doors. These rollers feature a spring mechanism and are compatible with both straight and curved doors. Technical specifications Diameter of rollers: 25 mm Width of rollers: 6 mm Minimum hole size in glass: 11 mm Maximum thickness of tempered glass: 6 mm Upper wheel height: 35 mm Upper wheel width: 27 mm Bottom wheel height: 33 mm (total height with buttons: 42 mm) Glass margin hole spacing: 19 mm Opening: 10 mm - 12 mm Suitable glass thickness: 4-6 mm, 9.5-14 mm glass hole Compatibility and accessories Supplied with screw covers Includes screws and plastic caps Installation To adjust the pulley, turn the screw clockwise or counterclockwise with a screwdriver to modify the glass size If clamping other sizes of glass, cut the connecting belt of the glass tank as needed Usage Top wheel is adjustable and can rotate left and right Lower wheel has a spring and oscillates