Made to mobilize Metro Super Erecta and TableWorx mobile-ready models, these swivel stem casters with brakes make it easy to move your wire shelving or work tables. Features a 5-inch non-marking polyurethane wheel, chrome-plated steel rig, and side brake to control movement. Fits Metro Super Erecta and TableWorx mobile-ready posts and legs Appropriate for dry environments and medium-duty applications 5"dia non-marking polyurethane wheel with 1.25"w flat tread Chrome-plated steel horn, stem, side brake, and hardware