The Bowjax Monsterjax uses 6 arms that vibrate at different frequencies to dampen the vibration and contact the limb of a bow. They come with a strong weatherproof double-stick tape for quick and easy application. Odorless material with no unpleasant scent. Solid limb monsterjax should be placed on the flat part of the limb between the cam and the limb pocket. Monsterjax should be installed lengthwise parallel to the limb for maximum dampening effectiveness. Weighs only 167 grains.