Bolting this additional industrial storage to starter heavy duty double sided cantilever racks lets you create a continuous run of racking that holds long, bulky, and odd-shaped stock. *Please note, the selected arm type below may differ from the style displayed in the product image. Bolts to correspondingstarter unitto increase storage capacity 16 straight arms, with or without lip Arms are adjustable on 3" centers Needing individual components? BrowseHERE.