DESC: The Yakima Deadlock is a must-have hitch mounting rack accessory. With one key, you can securely lock your bikes to your rack, and your rack to your vehicle. The Deadlock locks the furthest bike on the arms of your rack. With this bike locked, it's impossible to remove the inner bikes or the rack itself. Protect your investments! Bottom Line: Karma is not enough security to keep your new $2,000 bike strapped to your unlocked hitch rack.