Like I said, I too was a little leary of the STS at first.. I then TRADED a guy for it because of the fact I was unsure of it.. I am glad I traded him for it because it does work and my bow is just as quiet with no bowtech hush kit on the string.. I also gained 5fps by taking the hush kit off.. I left them on the cables though... If your unsure, check classified on archery sites, they pop up alot, mostly due to people selling bows bare and then selling everything else, and also people have been going to the double sts and selling their like new singles... Just a though..