The Malone Runway HM4 4-Bike Bicycle Carrier 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. All parts and workmanship are guaranteed with a Lifetime Limited warranty. Some assembly required.