The Axion Silencer Stabilizer is one of the fastest growing products in the archery industry. The harmonic stabilizer is purposely tuned to be out of phase with the bow and will dampen 75% of residual vibration resulting in a quieter shot and better arrow grouping. Axion Silencer Stabilizers are CNC machined from 6061-T aluminum and comes complete with Mathews Harmonic Dampers and one Mathews brass Harmonic Stabilizer.With Mathews Harmonic Dampers - Proven Vibration Dampening Products by Mathews Inc