For the original #1310 Trauma/O2 Pack Bag. The Expedition rack is the rack of choice for cyclists who require exceptional durability and expanded size. Built from 3/8" 6061 aluminum stock, the Expedition Rack is intended to be used primarily where additional rear clearance may be needed for large loads. The secret to this rack's tremendous strength is a third support strut which angles back 21° from the main load-bearing strut. In addition, the rear support strut offers a 6" long section for attaching the lower portion of your panniers' suspension system to enable precise positioning of your load. All stress points are double-welded. Mounting hardware included. Wt. 36 oz. Length: 16 1/4". Overall height: 14" Pannier mounting height: 12". Width: 6". Color: Black.