■ Set of 3 Trumpet Piston Finger Button Parts ★ These are trumpet piston button accessory parts purchased from an online shop. ★ The stone color is pearl white shell, and the receiver is silver-colored. The shape is round and regular. ★ These are not genuine Yamaha buttons. ★ They were installed on a current model YAMAHA YTR4335GⅡ in image 4, but it is unknown whether they can be installed on other manufacturers' instruments. ★ The three pieces weigh approximately 13 grams. ★ Please understand that we cannot offer a warranty or refund if the screw threads or the instrument itself are damaged due to forced installation. Please understand this and take responsibility for your own actions. ★ We will ship from the post office.