Whether you need the later model Beech Tow pin 60-820029-1 or the early pin design 35-825106, RNL has it for $20 each. I have not found one for less.

If you find a Beech PMA Tow Pin for less, please let me know.

Early Pin is #13 in the below diagram.

You do have a spare tow pin in your plane, right?

By the way, the things that goes through the hole in the center of them are:

MS20392-1C23 Clevis Pin and an MS24665-132 Cotter Pin