This mailbox lock replaces the new-style of mailbox locks that HAS USPS stamped on the front of the lock.
If your mailbox lock HAS USPS stamped on it, this is the lock you need.
If you mailbox DOES NOT have USPS stamped on it, you need the Old Style Mailbox Lock
Note: This lock does not come with the tailpiece. You need to reuse your existing tailpiece or add it as an option.