INNO INA453 Rooftop Cargo Rack Kayak Lifter Ultimate assist for all Kayakers makes it feel like there's someone there to help you load your kayak. Universal Mounting System mounts to square, round, and most factory crossbars The foldable L shape arm that mounts between the front and back bars of your roof rack, allows for easy loading while preventing the cars' body coating and mirror from being damaged. Requires existing crossbar system to be present