For : PVC Sliding Windows. Wheel Height: 13.5mm Material: Copper, Al Finishing: Oxygenation. Bearance: Less than 35kg/pcs Roller, wheel, window roller, window wheel, door roller, door ... , Competitivve price, Warm service, Prompt delivery, window hardware, winddow accessory, window handle.Material and other information, you can kindly contact us. PVC sliding window roller