Description:100% brand new and high quality. Feature:Plastic body, copper rod, the inner upper pulley is the bearing and the inside lower pulley is steel ball, durable and anti-slip.Dual top wheels and single below wheel design, increase the stability, good percompatiblemance, practical and useful.Three size to choose to meet your various needs.It is compatibleable compatible 4-6mm thickness glass to use.Good and excellent accessories and kit compatible home bathroom use.It is compatibleable to use in shower room, partition sliding door, sliding door, etc. Specifications:Item Type: Shower Door RollersMaterial: ABS+Nylon+SteelSize: Pulley Diameter: 23mm/0.9in, 25mm/0.98in, 27mm/1.06in(Optional)Color: Light Grey+White+BlackApplication: Shower room and bathroom accessoriesQuantity: 8pcs/set Note:No retail package.Transition: 1cm=10mm=0.39inchPlease allow 1-3mm error due to manual measurement. pls make sure you do not mind becompatiblee you bid.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package Includes:8 x Shower Door Rollers