Hello friends! My name is Valentin. I'm brand manager at KGUBrass - manufacture of custom trumpet (and wind instruments) parts and accessories. It a big joy to be involved in process of creation of new stuff that helps musicians discover new edges of sound, feelings or even style. Often players have questions of meaning and purpose of some accessories and the are some fields that require clarifications. I will try to post here some topic with useful information about custom trumpet accessories, news from our production lines and would likely answer on your questions about KGUBrass items. Nice to meet all of you here. C ya.