■ Set of 3 Trumpet Piston Finger Button Parts ★ These are trumpet piston button accessory parts purchased from an online shop. ★ The stone color is orange moonstone, and the receiving cup is silver-colored, round in shape. ★ The set of 3 weighs approximately 11.2 grams. ★ Image 5 is an installation example. ★ They were installed on a current model YAMAHA YTR4335GII, but it is unknown whether they can be installed on other Yamaha models, Bach, or other manufacturers' trumpets. ★ 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 and proceed at your own risk. ★ We will ship from the post office.