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 NewColor: As picture shownType: Single wheel / Double wheel (Optional)Material: Body: Nylon, Shaft: Aluminum, Wheels: Polyacetal, Others: Stainless Steel ScrewsMinimum Hole size in the glass: 10mm (can fit 10mm - 12mm)Fix the center of the screw to the end of the roller: 18mmWheel 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..