Saris Thelma 2 Bike Universal Hitch Never contacts the bike frame, just the wheels. Unique wheel trays accommodate road slicks right up to Down Hill knobbies Weighs 26 pounds, making it easy to install or remove from hitch Universal Hitch Fits 1-1/4" and 2" hitches Fits bikes with 700c road tires and 26" and 29" mountain bike tires.Carries 2 bikes up to 35 lbs. each