Brass piston button for Bach trumpet.
 Set of 3.
 There are many piston button custom parts to make them heavier,
 In order to achieve both good response and resonance, this product is made thin and does not have any shells or other materials fitted inside.
 This is a part that allows you to feel a pleasant vibration.
 These are newly produced custom parts made exclusively by UPMAKE.
 Please try it.