_x000D_ _x000D_These are ball casters that can rotate 360 degrees, suitable for use in processing machinery, furniture, machinery, toys, and so on. Smooth-moving these ball bearing rollers can be used for long time. Small size, light weight, these ball bearing rollers are easy to use, time and efforts saving. _x000D_ _x000D_Features _x000D_ _x000D_- Color: Silver. _x000D_- Material: Carbon steel. _x000D_- Size: About3.30X1.20X1.20cm/1.30X0.47X0.47in _x000D_- Made from sturdy material, these ball bearing rollersmove quietly and safely, support long time using. _x000D_-360 degree rotation, flexible rotation,metal ball rollers can bring you much convenience to use. _x000D_- Excellent bearing capacity,rotation ball casters are not easy to deform or break, very stable. _x000D_- Practicalmetal casters can be use for workbench, and other small device, threaded design, can be installed firmly. _x000D_- Small size, light weight, therotation ball casters are easy to use, take, bring you satisfying using feeling.Packing list4 x wheels