[High-quality material] The shower door roller is made of aluminum alloy and ABS material, wear-resistant, sûr, sturdy and durable. [Convenient Installation] Installation is simple and convenient. This maintenance can be done by yourself, generally only a suitable shower roller and screwdriver are needed, but professional installation is recommended. [Sliding] The door uses double-top shower door rollers to slide the door and save effort. Therefore, the door must be balanced to prevent swinging and ensure smooth operation. [Size] Wheel diameter 19 mm, suitable for 4-6 mm thick glass door, compatible with 10-14 mm glass mounting hole diameter. [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, sûr, 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