The Durham Manufacturing Company has an all new series of 3 heavy duty mobile cart/workstations. All models measure 32"H x 24"W x 34"D and have heavy duty casters with a capacity to hold 1,000 lbs. All models have 2 rigid casters and 2 swivels with locking brakes for added security. The new units are also provided with a rubber mat tray and all components are manufactured of prime cold rolled steel and finished in rust and acid resistant gray, baked powder/paint enamel. The units do differ: Model 663-95 has two12 compartment bins placed back to back for 24 compartment capacity. Model 664-95 has two 40 compartment bins back to back for 80 compartment capacity. Model 662-95 offers a 12 compartment bin back to back with a utility cabinet that has a 4 compartment interior and lockable doors plus two 6 drawer cabinets.