Features: 1.Every product has a unique Manufacturing Part Number label on the inner package that proves it has been qualified,which include Part Number,Model Number and inspection date information;2.If you have any questions about the item,please provide us the Manufacturing Part Number for checking,your profits will be guaranteed.3.: The plastic coated bearing pulley is made of quality bearing steel material, flexible, sturdy and durable. It is a great substitute for your old products.4.Wide Application: Suitable for furniture hardware accessories,doors, windows, printers, etc.5.These good bearings provide enough speed and easy to disassemble.6.The product package contains 20pcs white plastic coated bearing pulley and 20pcs black plastic coated bearing pulley.Specifications:Material: Bearing SteelColor: White and BlackBrand name: leopardSize: Product Size: 0.8x3x1cm/0.31x1.18x0.39inch(IDxODxH)Slot Width: 0.6cmGroove Depth: 0.3cmRadian: R=0.3cmWeight: 575 gPackage include:20 x White Plastic Coated Bearing Pulley20 x Black Plastic Coated Bearing Pulley Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Dadangjia