houseables caster wheels, casters, set of 4, 3 inch, rubber, heavy duty, threaded stem mount industrial castors, locking metal swivel wheel, replacement for carts, furniture, dolly, workbench, trolley houseables four-pack of general duty caster wheels for fluid mobility caster wheels give instant mobility to stationary objects in your workshop, garage, warehouse, and much more. our wheels come in four-packs. the three-inch general duty threaded stem caster with locking brakes give fluid mobility to heavy loads on hard industrial surfaces such as finished concrete floors, where quiet movement, smooth cornering, and floor protection are necessities. 360-degree pivoting action for soft mobility and turning in the garage or warehouse our caster wheel sets are the perfect solution for better positioning your carts, stands, and racks to any desired location in your garage or workshop. the double lock mechanism locks both the back wheels and the swivel bearing at the same time, which is essential for safety in the workplace. the wheels themselves are non-marring and will not markup floors -- while the 360-degree pivoting action offers a soft cushion ride for taking corners and odd angles with greater precision.