■ Trumpet Piston Finger Buttons Valve Parts Set of 3 (Overseas Manufacturer) ★ These are new trumpet piston button accessory parts purchased from an online shop. ★ They are light-heavy type alloy round buttons (weighing approximately 21.6 grams for the set of 3). ★ There are some dullness and scratches on the surface of the plating. ★ They were able to be installed on a current model YAMAHA YTR4335GⅡ, but it is unknown whether they can be installed on other Yamaha models with different part numbers, or on other manufacturers like Bach. ★ Image 3 shows an example of them installed on a current model Yamaha 4335GⅡ. ★ 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 take responsibility for your own actions. ★ Due to being from an overseas manufacturer, there are some imperfections in the finish and molding, so please understand. ★ Will be shipped via Yu-Yu Mercari delivery service.