The tennis dampener can effectively reduce the vibration generated by the ball hitting the string to increase comfort. With this shock absorber, you can obviously feel the reduction of the vibration and the change of the residual sound at the moment of hitting.Material: Silicone; Dimension: 2.2cm; Packing List: 4 x Tennis Vibration DampenerIt works really well at dampening the vibrations and you never have to worry about it falling off. Reduce the hurt to the elbow joint caused by vibration, and improve sports fun. The lower resonance allows for better control when swinging through the ball.It is easy to install and helps with vibration when hitting the tennis ball with minimal detachment issues and zero blowouts.The tennis dampener is very useful, just thread it into the strings closest to the throat, so as to meet the shock absorption needs in different periods.The tennis dampener can effectively reduce the vibration generated by the ball hitting the string to increase comfort. With this shock absorber, you can obviously feel the reduction of the vibration and the change of the residual sound at the moment of hitting.Specification Material: SiliconeDimension: 2.2cmPacking List: 4 x Tennis Vibration DampenerAdvantageIt works really well at dampening the vibrations and you never have to worry about it falling off. Reduce the hurt to the elbow joint caused by vibration, and improve sports fun. The lower resonance allows for better control when swinging through the ball.InstructionIt is easy to install and helps with vibration when hitting the tennis ball with minimal detachment issues and zero blowouts.NOTE: The tennis dampener is very useful, just thread it into the strings closest to the throat, so as to meet the shock absorption needs in different periods.