The Super Slipjax are the future of string silencer design. These silencers are extremely effective at vibration and noise dampening and will virtually eliminate string oscillation at the shot. With their compact design these silencers weigh in at just 13 grains, yet they are extremely durable and will last even in today's faster compound bows. A bow press may be required to install these string silencers because they are inserted between the fibers of the bow string. For best results, insert these string vibration dampeners as close to the string serving as possible and tie them securely into place. When insatlled correctly, these dampeners can increase bow speeds by 1 to 3 feet per second. Increase your arrow spees and make your bow deadly silent with the Super Slipjax.