The Wilson Vibration Dampener is a great dampener that fits into any racquet string bed to provide maximum shock absorption. This is made with rubber and this allows it to be flexible, but still absorbs shock similar to tires on a car. You can place vibration dampeners anywhere outside the pattern of the cross strings. It allows you to reduce the vibration of the strings of a racquet and subsequently reduce or eliminate the “ping” sound you hear when you strike a ball. These racket dampeners slide easily onto your favorite racket to keep the game comfortable, focused and ready for the next serve ahead.