Add speed to your compound bow by installing PowerBalls

• for use on strings with a minimum diameter of 2,7mm, including the serving, i.e. string with carrera99.V.44 with 24 strands and .014 serving
• eath weighs 8,5 grains
• install with nock pliers
• 12 pcs per pack
• special reinforced shring tube (black)
• set of colored shwink tubes for personalizing your string

For more information, please visit the manufacturer website for this product .