DescriptionThese are ball casters, they can swivel 360-degrees. Suitable forprocessing machinery, furniture, machinery, toys, etc. Smooth moving andwear resistant, can be used for a long time. Quiet and strongload-bearing, very practical.Features-Color:As Shown-Material:Steel-Size:4.50X4.50X2.00cm/1.77X1.77X0.79in- Made of high-class materials, durable and sturdy. Strong load-bearing, stable and safe.- Ball transfer is suitable for electronics, hardware, machinery,chemical, food, forest, books, supermarkets, rubber and otherindustries.- Used in transmission system, feeding system, processingsystem, processing machinery and packaging machinery auxiliaryequipment.- Moreover, it works perfectly for drawer, so that you can roll it out with minimal pull.- Flexible, high-speeds and stable operation,used for rotating and changing the direction of the cargo.Package list: 8 x Ball Bearing Rollers