Add speed to you bow installing PowerBalls
- For use on strings with a minimum of 2,7 mm diameter, included the serving. I.e. string with BCY-X 24 strands and halo .014 serving.
- each weight 8,5 grains
- Install with nock pliers
- 12 per pack
- Special reinforced shrink tube (black)
- Set of colored shrink tubes for personalize your string.