[High quality material] The shower door roller is made of aluminum alloy and ABS material, wear-resistant, safe, sturdy and durable. [Convenient installation] L Installation is simple and practical. This maintenance can be carried out by yourself, usually only a suitable shower roller and screwdriver are required, but professional installation is recommended. [Sliding] The door uses shower door rollers double top to slide the door and save effort. Therefore, the door should be balanced to prevent swinging and ensure smooth operation. [Size] Wheel diameter 23mm, suitable for 4-6mm thick glass door, compatible with a glass mounting hole diameter of 10-14mm. [Wide use] Use our rollers to open doors and sliding systems easily and smoothly. Suitable for most bathrooms, powder rooms and steam rooms. Features: Made of high quality materials, wear-resistant, safe, sturdy and durable. There is no noise when the roller slides on the rail, which is quiet and stable. The gray wheels are both practical and conform to most decoration styles, simple and exquisite. It is an ideal choice for most shower rooms, massage rooms, bathrooms and even furniture accessories. Delivery contents: 4 * shower door roller