Roller Diameter: 23 mm. Minimum hole in glass: greater than 12mm. Suitable for shower glass of 4-8 mm.The distance from the upper wheel opening to the top is less than 12mm
Electroplated Door Rollers: 23 mm (diameter) upper and lower wheeled shower door rollers with an electroplated, rust-resistant surface.
Easy to Install: These shower door rollers are suitable for most shower enclosures, shower rooms and steam rooms, mounted on the top and bottom of the shower door for easy opening and closing.
Smooth Sliding: No noise when opening the shower door, these glass door rollers help the shower door slide smoothly. Easy to install and maintain.
Set Includes: 4 x double shower door rollers, 2 x upper and 2 x lower (2 lower rollers include 2 springs + 2 screws).