Reduce the vibrations of your racket with these anti-vibration dampeners. Weighing less than one gram, the dampeners reduce vibrations by up to 60%. This really helps you with any current wrist, elbow or shoulder injuries and most certainly helps in keeping those injuries away.
You can also choose where to put the dampeners and use a pattern that suits you best. Put them at the top = higher power. Put them at the bottom = greater control. Keep them in the middle to keep the current balance of your racket. They are easy to install and easy to remove to put onto another racket.
ShockOut Dampeners are endorsed by a study by the Higher Technical School of Industrial Engineering of the Polytechnic University of Madrid.
8 in a packet, put them in back to back, 4 holes.