Keep your string system quiet and your hunting more successful with Excalibur Cat Whiskers; These string silencers reduce noise with little to no performance reduction and take your crossbow to the next level; Cat Whisker crossbow string silencers have been one of the most popular silencers with bowhunters for decades; They'll boost your hunting game so you can be the quietest predator around; Be ready for non-stop hunting with Excalibur; These string silencers are made using all-rubber material that is 100% waterproof; They are designed to improve the overall performance of your crossbow by reducing string oscillation and noise; Sold by the pair; These rubber silencers for crossbow string should be trimmed to the desired look and length; Recommended to use serving material to tie in place for a more uniform look as well as better retention; Great for all Excalibur crossbows; Sold by the pair