These Class III hitch mounted bike racks provide the ultimate in flexibility to accommodate todays wide variety of bike frame designs while still maintaining all the advantages of having a hitch mounted bike rack. They are available in 3 and 4 bike models with individually adjustable rotating cradles opening. They are suitable for use with any Class III thru Class V trailer hitch with a 2" receiver opening. Fold down models allow the rack to fold down away from the rear access doors found on many vans and SUV's.