1.The casters consist of four medium-sized casters, equipped with high-quality thickened steel shells and thickened top plates, each with double steel ball bearings. Durable bearings can support 800 pounds, and each caster can support 200 pounds 2.All 4 casters are designed to rotate 360 degrees and can be easily moved in any direction after installation. The dual bearing structure ensures smooth and quiet rolling of the rotating casters. 3.The locking mechanism is easy to use and can provide secure fixation for your items, preventing any accidental movement or damage. 4.Castors are widely used. Used for workbenches, carts, furniture, carts, and carts, suitable for indoor and outdoor use 5.Easy to install, you can easily install and use