The M-Wave Aluminum High Traveler Rear Carrier Rack is a great rack for the long haul traveler who uses pannier bags. What makes the rack unique is the stopper pins that prevent for cargo from shifting due to imbalanced weight distribution.Adjustable for 24 to 29 inch bicyclesEspecially works well with pannier bags with a stopper mount to prevent movement of the bagSuitable for most trunk bagsWith a reflector/rear light mount and spring armUniversal fit and stainless boltsM-Wave baskets and racks are both functional and fashionable. Designed with the commuters needs in mind.M-Wave is our most popular line of products with the widest variety of cycling and sporting gear. From Locks to Lights, Bags to Bar Ends, M-Wave has you covered. Good price, great quality.