Saris Bones 2-Bike Trunk Rack Injection -molded arms and legs are the strongest on the market Built with 100% recyclable, non-rusting materials Ratcheting hold downs are easy to adjust Injection -molded arms and legs are the strongest on the market Built with 100% recyclable, non-rusting materials Ratcheting anti-sway straps secure and stabilize bikes. Arc-based design fits over most spoilers, and separates bikes on different levels