Frame bolts are 3/8" so a little larger bit (7/16") for the holes to take care of any misalignment and 5/16" for the construction lags. If I have time, may pick up some spares just in case. Step-bits would be ideal if you have a set.

Mesh on all panels has been fully welded and 4 panels need a few brackets welded on. Will get that taken care of tomorrow morning. Otherwise everything is ready to go for install.