This CompX National Standard Mailbox Cam Lock comes with 3 keys and is perfect for exterior use. The lock is designed to fit most mailbox types and is made of durable materials to ensure long-lasting use. The lockable feature adds extra security to your mailbox, giving you peace of mind knowing your mail is safe. This unit is a must-have for anyone who wants to secure their mailbox without compromising on style. The silver color adds a sleek touch to any mailbox and the lock can be easily installed with minimal effort. Get yours today and protect your mail from unauthorized access.