Battery Lug Terminals

Just insert them side by side. Use your head. There are charts, but there is a bit of "cheat" room on cable size If you are soldering, it doesn't matter that much

I dislike using eyelets then connected to a bolt on a clamp. You've just added 1 more connection for drop and trouble. Also, if you have some scrap copper tube, you can easily make your own eye ends Just hammer the end shut, drill hole, round off corners, and cut it off the stock.