Color 8 Piece 25mm Material copper, nylon, Glass Classic Style Assembly required No About this item 25mm Shower Door Wheels: Replace old rusty rollers to repair your glass door and keep sliding smoothly. Size: the diameter of the shower roller is 25mm, thickness is 5.55mm. Total length: approx. 32mm. Requires a glass door hole with a diameter of 10-12mm and a thickness of 6mm. And the screw is M6 and its length is 14mm. Please check the diameter of your old shower rollers and the thickness of your glass door before purchasing. Material: Made of nylon and copper. Provide good elasticity, good wear resistance. Compatibility: For shower doors and massage cabins, bathtubs, jacuzzi or any other furniture. Tips: Before installing the shower door rollers, please apply silicone grease (packaging not included) on the surface of the glass door rollers to prolong its service life.