Just put them on some older carbons I had. I used the 2" Blazers. They seem to be just fine. I've shot them about 30 times per arrow and seem to be holding up great. It took a little experimentation to get the water right, but after that it was fine. A little tip is to use a thermos to keep your water in. It keeps it hot and it is deep enough to get the whole thing submerged. Good luck.