Nylon and copper: good elasticity, good wear resistance Practical: Set of 8 rollers, multiple replacements, spare parts in one order Dimensions: Roller diameter: 27 mm, roller thickness: 5.5 mm, total length: approx. 32 mm A perfect replacement: Over time, the rollers need to be replaced. Only an additional screwdriver is required for repair. Suitable for - For glass door openings: 10~12 mm; 12 mm is recommended. Thickness: 4-6 mm. For shower doors and massage cabins, bathtubs, whirlpools or other furniture. Replaces a defective bearing. Rail guides for shower doors. Supplied with screw covers. Spring mechanism, also suitable for curved doors. With screws and plastic covers Single Shower Door Rollers/Gliders/Wheels/Pulleys Replacement Shower Door Roller, Fits Most Shower Enclosures Fits Most Shower Enclosures, Shower Stalls, and Steam Rooms Shower Door Rollers, Shower Enclosure Rollers for Bathroom Quantity: 8 Pieces (27 mm) Note: The data is measured manually. Please allow 1-163 cm