It is attached to the body with four screws. The adhesive surface is extremely small, improving the vibration rate of the entire body and improving response. It also reduces the variation in each register, allowing you to play exactly how you want, resulting in a responsive tone rich in overtones.SATIN GP (Satin Gold Plated) - Provides a rich tone with moderate resistance. For use with Selmer and Yamaha models only. (Not compatible with Yanagisawa models.)・For soprano saxophone ----- *If you wish to remove the product, shipping costs will be borne by the customer. *Processing may be required depending on the age of the instrument being installed. *Please use the dedicated wrench to attach and remove. * In most cases, the thumb rest that comes with your instrument is glued in place. Trying to remove it forcefully may result in scratches or damage.