1、Compatible with Glass Door: The diameter of shower roller is 25mm, the smallest hole size of glass is 10‑10.5mm, and 10‑12mm hole can be applied. Our rollers are suitable for glass doors with 5‑6mm thickness. 2、Durable Material: Made of 304 stainless steel, nylon and premium plastic, our shower rollers are waterproof, wear proof and durable. The rollers have long service life. 3、Easy to Slide: The shower door rollers has strong bearing capacity and good stability. The friction coefficient is small and there is very little noise when sliding. 4、Easy to Install: We provide the screw covers for your installation. Our door shower rollers are quick release type and easy to install and can directly replace damaged shower rollers. 5、Wide Application: Shower door rollers are for shower stalls, massage rooms, bathtubs, even for furniture accessories. Ensure easy door or gate opening with our runners.