If an encyclopedia doesn't help...
If by "hex bolts on the seat frame" you're referring to the 4 bolts that hold the seat brackets and slider assembly to the floor (the whole seat down to the carpet) it's a T45 Torx bit that you'll need. If you want to release the seat slider from the front bracket (not needed to remove the seat - just take the braket with the seat) you'll also need a T50 Torx bit. If you want to manipulate something else, please be more clear.