My first set of squidees on the bowstring of the Liberty started showing signs of wear in that some of the arms started to "open up" instead of being in that spiral position. I tore the first set off to determine how much speed loss they caused (1 fps by the way) and have since put a second set on the bowstring. They have about 15 shots on them so it is going to be awhile before they bite the dust. They definitely do work well as the string has a very noticeable twang when they were not installed.