Swagman Trailhead 4 Bike Fold Down Rack (2" & 1 1/4" Receiver) Transports up to 4 bikes - cannot be used on trailers or 5th wheel RV's 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