Material: Shower door roller made of nylon and copper, sturdy and durable, stable quality and have a long service life. Good elasticity, good wear resistance, wear-resistant wheels are smooth and low-noise sliding. Easy Installation: Shower door rollers easy to move and install. Adjustable to allow you to adjust the height of the door, easily mounted. For repair, only a screwdriver is needed. Size: Wheel diameter: 20 mm, Wheel thickness: 5.5 mm, Total length: approx. 33 mm. Suitable for: Glass door thickness: 4 to 6 mm. Glass hole size: 10-12 mm. Wide application: Shower enclosure - Replacement rollers for shower enclosures and massage cabins, bathrooms, jacuzzis and even for furniture fittings. Thanks to our shower rollers, door and sliding systems can be easily and smoothly operated.