HIGH QUALITY MATERIALS: The shower door roller is made of high quality aluminum alloy and nylon. The material is safe to use, not easy to rust, wear resistant, durable, stable and long lasting . DESIGN CONCEPT: The shower door roller adopts double roller mode, reinforced aluminum alloy connecting rod, strong supporting force; the roller design is wear-resistant and durable, and the smooth round bearing is very convenient to use. PRODUCT SETTINGS: you will get 4 x 26mm shower door wheels (2 x upper and 2 lower wheels). The upper wheel can rotate left and right, and the lower wheel is equipped with a spring. Suitable for 4-8mm thick glass doors with 10-14 glass holes. EASY TO INSTALL: The pulley needs to be installed with fewer parts, so it is very convenient to use. The bathroom sliding rail is easy to move and install. You can also slide the door to save space and look more beautiful. WIDE RANGE OF APPLICATIONS: Suitable for shower doors, massage cabinets, bathroom doors, etc. , suitable for furniture accessories. With our wheels, the door can be opened smoothly and the noise level can be reduced.