Engineered for high-poundage bows and crossbows, the LimbSaver Super String Leech delivers maximum reduction of string noise with minimal-to-no-speed loss. This package includes two Super String Leeches. Lightweight, weatherproof, and durable, the Super String Leech is made from LimbSaver's proprietary NAVCOM technology (Noise and Vibration Control Material), which effectively absorbs a wide range of frequencies to dissipate energy and vibration. Quick and easy to install, it's durably built to be used outdoors in harsh environments. Using state-of-the-art technologies, LimbSaver produces highly effective noise- and vibration-dampening products for archery and firearm products, including bow stabilizers, recoil pads, rifle slings, and more. Proudly engineered and hand-made in the USA, LimbSaver products are widely used by outdoor enthusiasts, military, law enforcement, and more.