For use on compound bowstrings with a minimum of 2,7 mm diameter, included the serving. - Each weight 8,5 grains - Install with nock pliers - PowerBalls must be installed over parts with serving, not directly on the string fibers. Bulk pack with 50 PowerBalls *Shrink Tube not included
If your bowstring comes weighted from factory, we recommend replicate the position and weight of the factory bowstring.