Allen Deluxe hitch bike racks are the perfect way to get out there and bring your bikes along.  Rugged, tested design will deliver years of reliable use. Hitch insert fits either 1 1/4" or 2" receiver hitches (2 and 3 bike models) or 2" receiver hitches (4 and 5 bike models). Included No-Wobble Bolt secures rack inside of receiver hitch with a movement-free installation. Arms fold out of the way when not in use and rack tilts back when needed. Patented individual tie-down cradles secure and protect your bicycles. Accommodates a wide range of bicycle frame designs Minor assembly required.  Important installation note: never use on trailers. VIEW HITCH BASE DIMENSIONS