I put a pair on my Alpine Impact X-treme and they work great. One local pro shop told me they only work on new Hoyts, a different shop said ,"Well, lets find out." He put on a pair and I've been shooting them for 3 weeks now. They did slide about 3" after about 100 shots so I put a small dab of clear silicone on them where they meet the limbs and no more sliding. Give it a try, if they don't work for you I'll buy them from you.