Swagman Trailhead 3 Folding Hitch Bike Rack Transports up to 3 bikes Compatible with 1-1/4" and 2" receiver hitch Built in anti-wobble hitch device Our new two arm rack has super soft flexible cradles which rotate allowing a large variety of bike frames to fit Arms easily fold away and rack folds down to allow access to the rear of your vehicle. . It is not a RV Approved bike rack, meaning that it is not supposed to be use on the rear of a 5th Wheel or Travel Trailer/Pop Up