Nylon and Copper - Good elasticity, good wear resistance Cost-effective - Set of 8 rollers, multiple replacements, spare parts in one order Measure - Wheel diameter - 27mm. A perfect replacement - Over time, the rollers need to be replaced. Only a screwdriver is needed in addition for repair. Suitable for - For glass door openings: 10~12mm; 12mm recommended. Thickness: 4-6 mm. For shower doors and massage cabins, bathtubs, jacuzzi or any other furniture LESOLEIL Shower Door Rollers Replacement Rollers 23mm shower door rollers rollers 8pcs shower door rollers 23mm shower roller Replace a bearing that had broken Shower Door Rail Guides Comes with screw covers. Spring mechanism, also compatible with curved doors. With screws and plastic covers Single Shower Door Rollers/Glides/Wheels/Pulleys Replacement Shower Door Roller Suitable for most shower enclosures Suitable for most shower partitions, shower enclosures and shower enclosures steam Easy to install. A solid and perfectly designed