For moving heavy objects. The load should be lifted using either a roller crowbar or a jack, so that the skates can be safely positioned under it. The larger diameter sealed bearing rollers ensure ease of movement and spread the load, protect floors from damage caused by high point loads or oil/grease contamination. The skates are maintenance free and are fitted with handles for ease of carrying and positioning. The platforms of the skates are fitted, with a rubber surface that helps grip and protect the object being moved.Supplied as individual skates.