Description: 100% brand new. Suitable for most shower enclosures, shower cabins and steam cabin enclosures. Designed for use on 4-6mm/0.15-0.23inch glass. Screw cover caps supplied. Easy glide rollers and easy clean. Quick Release Type. Specifications: Color: As picture shown Type:Upper Pulley,Bottom Pulley,Upper Pulley+Bottom Pulley. Materials: Plastic, Nylon, 304 stainless steel micro-bearing POM ABS brass axis. Wheel diameter: 26mm /1.02inch Wheel thickness: 6 mm / 0.23'inch Upper Pulley:40 x 35mm/1.57 x 1.37inch(L x W) Bottom Pulley.40 x 32mm/(L x W) Suitable for the 4-6mm/0.15-0.23inch glass. .