Zipper pull loop, stronger version

This is a stronger version of the loop in the zipper pull by marqss . You still need the remaining parts of that project to have a functional zipper pull replacement. I loved the original model, but the loop is thinner at the "head" of the loop for easier insertion in tighter zipper carriers. Unfortunately, this also makes the part weaker, and somewhat unsuitable for things like backpack zippers, which tend to be exposed to stronger pulling forces. I'd recommend printing this in PETG and increase the number of walls to make the print stronger. Also, I prefer to use a small amount of glue to make sure the loop will not get out of the pull.