Electroplated door roller: 23 mm (diameter) wheels, electroplated surface, anti-rust; suitable for glass doors with a thickness of 4-6 mm, glass openings are 12-14 mm. There is no noise when opening the shower door, and these glass door rollers help it ide smoothly. It is easy to install and maintain. These replacement shower door rollers are suitable for most shower rooms, shower rooms and steam room enclosures, and are installed on the top and bottom of the shower door to make it easy to open and close. Stable iding and no noise: The shower cubicle casters are made of copper and galvanized plastic alloy material, which has strong supporting force and rustproofing, and can be used in a humid environment for a long time. Pulling on the door can be moved easily and there is no noise when moving The shower door twin rollers runners is easy to install, please make sure the roller size you want and the diameter of glass hole, if you still have trouble with it, Please feel free to contact us. Technical Details Manufacturer Mmjklkm Package Dimensions 11 x 9 x 5 cm Material Glass Item Weight 170g