100% Brand New And High QualityCOMFORTABLE AND PRACTICAL: Smart and trouble-free; The ball can rotate 360 degrees flexibly, use it smoothly, move goods faster and save more time. NO NOISE: The transfer units of the roller ball bearings are polished during the production process, a smooth surface and no big noise is generated during the transportation. This entire ball transfer rolls smoothly and quietly through the drving of ball bearings.WIDE APPLICATION: Ball roller bearings mainly help people move goods, not only at home such as sofas, showcases, carts, shelves, scooters, cabinets and kitchen appliances, but also in industries such as transmission systems, power systems, processing systems, packaging machines and Auxiliary machines.Ball material: nylonPackageinclude:1/4 pcs Ball CastersNote:1. Due to the different monitor and lighting effect, the actual color of the item may be slightly different from the color shown on the pictures.2. Please allow 1-3cm error due to manual measurement. (1 inch = 2.54 cm)Thanks for your support :)