"?Dumb nylon roller? No noise to open the shower door and these glass door rollers help it glide smoothly. Their premium white wheels fit in perfectly to your shower.?High quality material?The material of the shower roller is copper, nylon, strong and durable, good wear resistance. ?Suitable?These rollers fit 4-6mm glass shower doors.The diameter of the shower roller is 25mm,convenient hardware for sliding glass doors.? Easy to use?The bathroom sliding rail is easy to move and install.It can also move the door to save space.?Application?Universal design ensures that it is easy to use. #39;they are suitable for most shower enclosures, shower cabins and steam cabins. Product Description Features: Made of high quality nylon and copper material, strong and durable, impact resistant. Pure copper shaft effectively improves load capacity, reduces noise and is more durable. Applicable: 4-6mm thick glass doors, openings are 10-12mm glass doors. Suitable for most shower enclosures, shower cubicles and steam cabins. Specifications: Product Name: Shower Door Wheel Size: As shown Material: Nylon and Copper Color: As shown Package includes: 4 x shower door wheel Notes: Please allow slight error due to manual measurement. Thank you for your understanding. LRFR is committed to providing each customer with the highest standard of customer service. "