Allen Sports 542RR Deluxe 4-Bike Hitch Mounted Bike Rack: 4-Bike hitch mounted carrier ideal for road trips and camping excursions Arms fold out of the way when not in use and rack tilts back when needed Individual tie-downs secure and protect bicycles Accommodates a wide range of bicycle frame designs Included No-Wobble bolt secures rack inside of hitch Model# 542RR-R 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). Minor assembly required Weight Capacity: 140 lbs Important installation note: never use on trailers