Hitachi superdrive W6VB3 screw gun in great shape. The only fasteners I have for it is what's showing in the pic. Confirmed at Acme Tool you can purchase screws that take square bit. You would also need to purchase the square bit as I don't have any square bits for it.

Have a few other adds for tools / fasteners.If you are interested in everything, I am interested in making a deal.