Peerless JCT-100 the jumbo carts deliver a flared “tip-proof” design and sturdy all-steel construction to make them ideal for schools. rubber wheels, ball bearing axles and ball bearing swivels ensure easy handling and maneuverability even on rough surfaces. our plastic carts offer locking storage cabinets and include a ul listed 3 outlet electric strip for convenience. 4 inch casters for easy maneuvering over dis-similar floor types. all carts except jct100, jct200 and jct305 (5-year limited) have a limited lifetime warranty