Multi-purpose dolly for a wide variety of uses Perfect for moving toolboxes, cases or other heavy objects Reliable and durable steel casters Featuring 5 steel ball-bearing and rubber wheels Center wheel picks up extra weight Easily move objects with the Multi-Purpose Dolly. The base has a non-slip surface and is made of a durable polyethylene that will not chip or crack. 5 steel swivel casters ensure that the Multi-Purpose Dolly rolls smoothly on all surfaces.