This lock sucks, plain and simple. The key is difficult to insert and remove, it is not a smooth feeling and you have to fight it to get it in or out, and visually the key hole looks like raw cut metal with jagged edges. It looks like a piece of crap on the mailbox!It's working temporarily since it's (only slightly) better than the lock that was being replaced but it's going in the trash as soon as I go to the local home hardware superstore to get a different lock.The product I received for ordering this "EZ-Flo" lock was a Guard Security mailbox lock part number 127/5 and nowhere does it say EZ-Flo so maybe I did not get the product that I thought I ordered. I can't find a picture of the EZ Flo packaging anywhere to compare to what I received.