Profile: Cass Hudson Co., Inc. specializes in providing materials handling products. Our products include shelving & racks, rigs & wheels, carts, dollies, hand trucks and playform trucks. We also sell ergonomic equipment such as scissors lifts, tilt tables and conveyor systems. Single wheel casters are ideal for fixtures, carts, institutional equipment, medical equipment and furniture. They feature double ball bearing raceways and an octagon washer on the threaded stem for easy installation. There are many stem options available.