Injection-molded thermoplastic H.WILSON Tuffy Utility Cart features a locking cabinet. Will not stain, scratch, dent, or rust. Material is a natural electrical insulator. 18-gauge steel panels between shelves and posts. Keys and electric assembly included. All carts (except black ones) have square almond-color posts. 4" rubber swivel casters, two with brakes. Ships unassembled.