Fastway 2.5" Flash E-series HD Dual Lock Pack 86-00-3685 with 2 Keys Specially designed to fit the Fastway Flash E Series HD Ball Mount. 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. Water tight dust cap and o-ring extend lock life by protecting it from dirt and water