The E series dual lock pack is a faster, easier, and better way to securely lock both the ball holder to the drop bar and the drop bar in the receiver. The new Dual Lock Pack is specially designed for the Flash E series ball mount . The lock is a barrel style lock, making it nearly impossible to pick or drill – keeping your E series ball mount secure. includes a dust cap to keep the weather out, and is made out of hardened steel, making it the toughest lock around . Securely locks both the ball holder to the drop bar and the drop bar in the receiver High strength ball interlock for simple, smooth and secure locking Drill resistant barrel lock is an extra level of protection Cannot be false locked 1/4 turn lock and unlock is fast and easy Water tight dust cap and o-ring extend lock life by protecting it from dirt and water