Sims Vibration LimbSaver Riser Dampener for Mathews Compound Bows, 2-Pack Replaces existing harmonic dampers and stabilizers on Mathews compound bows Made from LimbSaver's proprietary NAVCOM technology to dampen vibration and unwanted noise Helps produce a smoother and quieter shot by greatly reducing vibration caused from your limbs Lightweight design that's quick and easy to install; for use in all harsh weather conditions Includes two dampeners