I would like to have a tool to screw in and out the adjustable female hold downs

[Ddave]

Spent some time and made a tool for the deck screws, but the front one are different. Where do you get a set of these tools? Are there more than two sizes?
There are several 1/4" square male adjustments in the trunk. Where do you get a suitable socket? Thanks.

[1959retractable]

I have purchased square sockets on Ebay before. They were old antiques but worked fine. Also, 8 point and 12 point sockets also fit square head. And I too would like to find tools for the female side of the screws. Hopefully someone has a source for that.