Set of 8 wheels/rollers for shower cabin in universal size. The set is adapted to all cabins in which this type of bearing rollers has been used. Thanks to their design, the wheels perfectly adapt to the shape of the guide rails. Specifications: material design: solid plastic + stainless steel bearing wheels with a diameter. 23mm recommended hole diameter in glass: 10-12mm suitable for glass thickness: 4-6mm distance from the edge of the glass to the center of the hole: 18mm possibility of wheel replacement In the set: 4 upper double rollers 4 lower single rollers (removable) 8 caps