THIS WORKBENCH HAS REINFORCED CHROME-PLATED WIRE SHELVES THAT PROVIDE MAXIMUM STRENGTH VISIBILITY AND VENTILATION. THE FRAME RESISTS RUST SCRATCHES AND DENTS. THE SHOP TOP IS COMPOSED OF A HIGH DENSITY PARTICLE BOARD THAT IS SEALED TO A RESIN BOARD FOR A SMOOTH LIQUID-RESISTANT SURFACE. THIS WORKBENCH INCLUDES 5"" POLYURETHANE WHEEL LOCKING SWIVEL CASTERS. IT IS EASY TO ASSEMBLE.