Designed for absolute performance, the String Leech® delivers maximum reduction of string noise with minimal to no speed loss. Incorporating a string wedge to resist string cutting, the String Leech® is made with our proprietary NAVCOMT (Noise And Vibration Control Material). Developed for hunting, it is the ultimate string silencer. A revolutionary product that works! Now standard on many new PSE® and Hoyt® bows. See your local dealer for leech replacement.