Oxdog OptiWeight™ system allows players to effortlessly adjust the weight and balance of their rackets by utilizing easily removable pieces. This unique customization technology allows the player to make adjustments in power and balance, enhancing player performance. The package contains three pieces with different weights (3,3 & 4,0 & 7,5 grams) to provide a more versatile customisation experience. OptiWeight comes with a designated tool to help in installing and removing the weights. Depending on your balance preferences, you can place the OptiWeight at the top or sides of the racket. Each package contains two pieces with different weights to provide more versatile customization. You can easily change the weights. Just the OptiWeight = 3,3 grams OptiWeight (3,3g) + Plastic weight (0,7g) = 4 grams OptiWeight (3,3g) + Stainless weight (4,2g) = 7,5 grams