■ Set of 3 Trumpet Piston Finger Button Parts ★ These are trumpet piston button accessory parts purchased from an online shop. ★ The color is silver, and they are button-shaped (round) without any stones. ★ The weight of the 3 pieces is approximately 15.6 grams. ★ There is dullness in the plating, and noticeable scratches on the sides of two of them (see image 4). ★ In image 5, 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 this and purchase at your own risk. ★ We will ship from the post office.