The Noise Dampening Package progressively reduces decibel level and shortens noise duration when used on a crossbow. It features a set of Bowjax limb vibration dampeners that fit limbs with gaps of 11/16â?쳌 â??3/4â?쳌 and 13/16â?쳌 â?? 1 3/8â?쳌, a retention spring dampener, and barrel dampeners. Fits all TenPoint crossbows 2011 and newer, All Horton crossbows and all Wicked Ridge crossbows 2012 and newer.