A lighter duty version for MTB and commuter use. Improved QR mechanism is more secure and easier to use. Compatible with all MTX Trunk Bags, 15 lbs. carrying capacity. Includes hidden storage tray and safety reflector. Clamp QR fits 25.4 31.8mm shims included Material Aluminum beam, plastic cargo deck. Bag Compatibility MTX Series Capacity 15 lbs Added Features Storage Tray, Safety Reflector, a http