Transport up to 3 bikes easily with Prorack's Tow Ball Mounted Bike Carrier. Manufactured from sturdy powder coated steel this bike carrier is made to last, resisting corrosion and abrasion damage. The base of the carrier is designed to mount directly to 1-7/8" and 50mm tow balls to suit a wide range of vehicle applications, simply slip the unit over the tow ball and tighten the two supplied socket cap screws to install. The folding carrier arm can be raised for use and lowered to save space and is held in place with a locking pin. With an anti-sway design this arm will reduce bike movement during transport.