Reduce noise while gaining speed (on most two cam bows) with our T.R.U. Ball® Spyder Speed Silencers! Simply put a ball on your string to increase speed or a spyder and a ball to increase speed (two cams) and reduce sound and vibration! . . SPYDER SPEED SILENCERS Item: TBALS Patent # 6,446,620 B1 Two-Cam With balls only, gain 2-15 fps With 1 spyder and balls, gain 1-8 fps and reduce noise. With 2 spyders and balls, gain 0-4 fps and reduce more noise. One-Cam With balls only, gain 0-2 fps With 1 spyder and balls, gain -1 to 2 fps and reduce noise. With 2 spyders and balls, gain -3 to 1 fps and reduce more noise. SPYDER STRING SILENCERS Item: SPYDR Patent # 6,446,620 B1 Use with Spyder Speed Silencers for even more noise reduction! Attach halfway between Speed Silencers and nock location by splitting string in a bow press and tieing them in using serving. . * T.R.U. Ball® Releases are protected by the following U.S. Patents: Pat # 5,499,620; Pat # 5,694,915; Pat # 5,715,805; Pat # 5,680,851; Pat # 5,787,870; Pat # 5,803,068; Pat # 5,860,408; Pat # 5,904,135; Pat # 5,937,841; Pat # 5,937,842; Pat # 6,205,991 B1; Pat # 6,446,620 B1; Pat # 6,571,786 B2; Pat # 6,484,710 B1; Pat # 6,478,020 B1; Pat # 6,481,431 B1; Pat # 6,584,966 B1; Pat # 5,685,286; Pat # 6,647,976 B2; and many Patents Pending. * T.R.U. Ball and the T.R.U. Ball Earth Logo are registered trademarks (# 2,063,774) of Tomorrow's Resources Unlimited, Inc. * Velcro is a registered trademark of Velcro Industries.