casters Set of 4 Heavy DutyThickened high strength stainless steel column and double ball bearing design for high load, Total load capacity-2200lbs Made of high quality vibration-absorptive polyurethane, enhance the impact resistance, the 5 inch swivel casters can roll smoothly and silent Safety Dual LockHeavy duty casters designed with double brake, which can stop the rotation direction of the bottom plate and direction of the wheel forward Perfect used on hospital worktables, tablesaws, medical equipment, and used on uneven floors lexibility & Safe for Your FloorThe plate casters design with 360 degree rotation top plate, can turn to any directions with little strength Its soft PVc rubberhave and internal bearing make it rolling quick and silent under heavy loads, while safe for all floors, wonAt scratch or mark your floor Widely UsedThe 5 inch caster wheels can be used indoor and outdoor, such as trolleys, workbench, toolboxes, light machinery, speakers, cabinets, stands, furniture, shelves, and other items commonly found in the workshop, garage, kitchen, and office The large casters can be used in both industrial and residential applications Screws Included & good ServiceThese 5 caster wheels for cart quipped with 16 BOLTS +16 NUTS +16 ScREWS +16 WASHERS +2 SPANNER If you are interested in other casters,click AWIEYUNN castersA for searching, our casters are from 1 inch to 6 inch , from office chair casters replacement to industrial casters