Heavy-duty Conductive ESD Chrome Wire Shelves Add-On Shelving unit allows up to 800 lb. shelf capacity. Additional wire shelves and aluminum split sleeves may be purchased separately. Mobilize starter shelving unit using optional conductive mobile kit, WR-00CO. Includes 2- 86" Post, 4 Wire Shelves, 8 S-hooks, Aluminum Split Sleeves and Drag Chain.