Quickly and easily attaches to mounting holes in the riser; Works in conjunction with Excalibur's dissipator bar system or on its own to quiet shot noise and reduce vibration; Designed to fit older Exo series crossbow models such as Exocet, Equinox, Phoenix, Exomax, and Vixen; These Crossbow String Silencers are designed to reduce noise and vibration of crossbow strings and enhance accuracy by smoothing out the shooting experience; These String Silencers are made from a durable material that can withstand extended use without damage; Durable composition enables these Sound & Shock Suppressors to endure rigorous shooting conditions & various weather environments; Installing these string silencers is easy and fast - you don't need to remove the bowstring from your crossbow to install them; Suppressors are essential crossbow accessories when you need less noise and vibration while hunting; Excalibur's archery gear is known for its durability, versatility, and changeability; By choosing Excalibur, you choose the experience and technologies of hunters