[High Quality Material] The shower door roller is made of aluminum alloy and ABS material, wear-resistant, safe, sturdy, and durable. [Convenient Installation] Installation is simple and practical. This maintenance can be carried out by yourself, usually only requiring a suitable shower roller and screwdriver, but professional installation is recommended. [Sliding Function] The door uses double top shower door rollers to enable smooth sliding operation and reduce effort. The door should be properly balanced to prevent swinging and ensure smooth performance. [Size] Wheel diameter: 25mm. Suitable for glass doors 4-6mm thick, compatible with glass mounting hole diameter of 10-14mm. [Wide Application] Use these rollers to operate 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. Operates quietly with no noise during sliding, ensuring stable performance. The gray wheels are practical and match most decor styles, offering a simple and elegant design. Ideal for most shower rooms, bathrooms, and related fixtures. Package Includes: 4 x Shower Door Rollers