Built to absorb the extreme torque of modern crossbows, the Sims LimbSaver TwistLox Spilt-Limb Crossbow Silencing Kit reduces limb vibration and unwanted noise for a smoother and more silent shot. They secure easily without the use of tools. Use two or more TwistLox suppressors per limb. Kit includes four TwistLox split limb crossbow dampeners, two foot stirrup dampeners, two string silencers and one bolt-retainer spring dampener. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Crossbow String Silencers.