Replaces the lower, curved, "hooky" part of the latch on common USPS mailboxes. Ours went missing a long time ago, and I had no idea what to do about it (short of replacing the entire mailbox). That is, until I found the originally design of this part, by Pawl.

This version has a little more beef to it in the curve, as I found the original version was prone to snapping where the curve and straight part meet.