Easy-Roll Shelving Unit Casters (Set of 4)

Four easy-roll wheels to customize shelving units Add mobility to any heavy-duty storage shelf Dimensions: 4'' H x 4'' W Can be added to the following shelving units to make them mobile: 4-Tier Black Shelving Unit with Adjustable Shelves and 250-lb Weight Capacity Per Shelf 5-Tier Black Shelving Unit with Adjustable Shelves and 200-lb Weight Capacity Per Shelf 6-Tier Black Shelving Unit with Adjustable Shelves and 600-lb Weight Capacity Per Shelf  SHF-01939 Make your shelving units mobile with these four easy-roll wheels. Heavy-duty Honey-Can-Do shelving units with varying weight capacities are hard to move. Not so much with these casters that can be easily screwed into the bottom of the shelf poles, so you can move your shelving unit around the room.