Features: 100% new high quality. Designed for use on 5mm or 6mm glass doors. Easy glide rollers and easy clean. Wear resistant wheels feature smooth, low noise sliding. The shower door rollers set include 4 upper rollers and 4 bottom rollers. Made of plastic, nylon, 304 stainless steel and other material, not easy to rust. Perfect for most shower enclosures, shower cabins and steam cabin enclosures. Specification: Condiiton: 100% Brand New Color: As picture shown Type: Single wheel / Double wheel (Optional) Materia l: Body: Nylon, Shaft: Aluminum, Wheels: Polyacetal, Others: Stainless Steel Screws Minimum Hole size in the glass: 10mm (can fit 10mm - 12mm) Fix the center of the screw to the end of the roller: 18mm Wheel Size: (Dia.) x (H) 25 x 5 mm / 0.98" x 1.97" (appr.) Door Roller Size: (L) x (W) 55 x 43 mm / 2.17" x 1.69"(appr.) Package Included: 8 x Shower Door Rollers (4 upper rollers and 4 bottom rollers with the screw and cover caps) Notice: Please allow 1-3cm error due to manual measurement and make sure you do not mind before ordering. Please understand that colors may exist chromatic aberration as the different placement of pictures. .