Material: Shower door roller made of nylon and copper, sturdy and durable, stable quality and have a long service life. The wear-resistant wheels are smooth and low noise sliding. Size: wheel diameter: 25 mm, total length: approx. 33 mm. Suitable for: glass door thickness: 4 to 6 mm. Wide application: shower cabin - Replacement rollers for shower cabins and massage cabins, bathrooms, jacuzzis and even for furniture fittings. With our shower rollers, door and sliding systems can be easily and smoothly. Easy installation: Shower door rollers easy to move and install. For repair, only one screwdriver is needed. Note: The data are all measured manually, please allow 1-3cm error Due to differences in light and display, there may be some color differences, please refer to the actual item received.