Super Strong Z Rack. The ultimate in back room storage rolling racks. Nest multiple racks for storage. 4" casters. The rolling rack has chrome uprights with a gloss black base. This Z Rack features 64" of hanging space. For additional hanging space, simply add a pair of Z Rack Height Extensions (#9651) to increase hanging space to 74". 2 locking and 2 non locking casters included. Note: This is a closeout item limited to quantity on hand.