Polyethelyne shelves and legs won't stain, scratch, dent or rust. 1/4" retaining lip on shelves. Push handle molded into top shelf. All shelves reinforced with two aluminum bars. Four 4" casters, two with locking brake.Polyethelyne shelves and legs won't stain, scratch, dent or rust. 1/4" retaining lip on shelves. Push handle molded into top shelf. All shelves reinforced with two aluminum bars. Four 4" casters, two with locking brake. Type: Storage Accessories Color: Multi-Color