Color: silver, graySize: Diameter 23mmMaterial: nylon and stainless steelweight:45g90gSpecifications: 1 x upper wheel, 1 x lower wheel, 1 x upper wheeland1 x lower wheeldescribe:Plated door roller: 23mm (diameter) roller top bottom shower door roller, plate surface, anti-rust suitable for glass doors with thickness of 4-6mm, glass opening is 13.5-14mm. (recommended for 14mm glass hole).These replacement shower door rollers fit most shower, shower and steam room enclosures and fit on the top and bottom of the shower door, making it easy to open and close. (recommended for 14mm glass holes).Opening the shower door makes no noise and these glass door rollers help it slide smoothly. It is easy to install and maintain. (14mm glass hole recommended). Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Dadangjia