LimbSaver TwistLox Split Limb Crossbow Silencing Kit Color: Black Designed to withstand the extreme torque and power from high-powered crossbows. Reduce up to 50% of vibration as well as noise from the limbs, giving you a noticeably smoother and quieter shot. Configured and tuned to specifically suppress the magnitude of vibration from crossbows. Easy installation: They securely lock between your limbs without the use of a plastic bracket. Use two or more TwistLox suppressors per limb. No tools required for installation! Included in this kit are 4 Crossbow TwistLox, 2 Stirrup Dampeners, 1 Bolt Retention Dampener, and 2 Super String Leeches.