The caster wheels glide easily on hard floors and carpets, making it easier to move furniture. The caster wheels are easy to move around the office or home, and you don't have to worry about scratching or damaging your floor. The caster wheels are ideal for industrial applications: workbench, trailer, workshop, workshop cabinet, toolbox, desk, portable tray, etc. The caster wheels can be quickly attached to small and medium-sized utility carts and other items commonly found in workshops, garages, kitchens and offices. Note: The data is all measured manually, please allow 1-3 cm error, due to differences in light and display There may be color difference, please refer to the actual item received.