At 4" in diameter, and 2" thick, these heavy-duty casters are built to last. And
since all 4 casters swivel, it's easy to maneuver your shop carts and mobile
workstations directly sideways, forward and backward - an essential feature in
smaller shops. Two of the casters feature a brake to keep things under control
when you want a steadier work surface. 175 lb load rating per caster.