Rolled edges along the side to prevent sag. Chrome 16 gauge steel frame and powder coating finish body. EVA drawer liners are included. Flip top locking lid supported with 2pcs gas strut. Knock-down construction and easy for assemble. Four pieces all swiveled wheels, two with brake. Separate locking system for the drawers, lid and side cabinet provide flexibility. Locks are keyed alike for convenient. Optional side shelf and screwdrive / prybar cabinet.