ITEM NAME:Replacements Casters Wheels shower door rolls into Upper and Lower diameter M3J1 Replacements Casters Wheels shower door rolls into Upper and Lower diameter M3J1 Suitable for 4 to 8 mm thickness glass, hole in glass more than 10 mm Equipment-alloy thread diameter: approx. 10 mm Wheel Size: In. Diameter 25 mm x thickness 5 mm Wheel Height: Approx. 34mm Material: ABS and alloy Replacing roller shower door with a diameter of 25 mm wheel. This shower door roller will provide an easy sliding motion Color: White and grey The package includes: 1 pair x rolls of top and bottom shower door Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3 cm..This shower door roller will provide an easy sliding motion. Material: ABS and alloy. Suitable for 4 to 8 mm thickness glass, hole in glass more than 10 mm.