Berries® Collaborative Table Mobility Kit (4) - BlackMake your Collaborative Tables mobile with the Collaborative Tables Mobility Kit. It includes four, locking dual wheel casters that easily replace the levelers that come standard on the Collaborative Tables. This gives you three foot options4 levelers, 4 casters, or 2 casters and 2 levelers for a wheel barrow style. The casters are colored black to seamlessly match the Collaborative Tables legs and TRUEdge. Product Dimension : 3" width X2" Height X 3.