Malone Runway HM4 Hitch Mount Platform 4 Bike Carrier - The MPG2137 Runway HM4 is a well-designed, affordable hitch mount, platform style rack that safely carries up to four bikes. Padded center arms firmly hold the bike's top tubes for worry free transport. Features include tilt-down frame for easy access, wheel holders that prevent bike to bike contact, anti-wobble hitch pin and key lock security. Features Four bike capacity Tilt-down center arms provide rear hatch & trunk access Secures bikes without wheel to wheel contact Anti-wobble hitch pin ensures a rattle free transport Key locking knobs for added security Vertically adjustable "glide & set" arms fit most bike styles (see Installation Notes) Lifetime Limited Warranty