.35 is what I use, but I drill two holes in the lip and shape the wire before inserting it thru. Trying to get a proper bend with the lip attached is a pain in the butt. Here is what my wire basically looks like before installing it. It takes a bit of manipulation to push through at the bends, but I do this with both polycarbonate and circuitboard lips. Both tag ends go into one hole in the bait body, which force the wire tightly together and also acts as a bit of resistance against pulling out.