I replaced these with the enclosed Schaller Selmer copy and will never use these again.
One thing to disclose is one is slightly bent, hit it against the wall. Very hard to see and it didn't affect the function of the tuner. I took pictures of bent and straight one to compare so take a look.
You'll get 6 tuners and screws (14 total, few extra ones).
These sell around $70 on average.