SCHILKE Standard Series Cornet Shank Mouthpiece for Piccolo and Trumpet Founder Renold O. Schilke was a successful trumpeter with the Chicago Symphony Orchestra and the WGN Radio Orchestra, among others. He was a talented performer, but he also made mouthpieces and tuned instruments during his playing days. While active as a top player, he also taught at Northwestern University, DePaul University, Roosevelt University, and other institutions. From his experiences in the educational field, he realized the need for mouthpieces that suited the player, and his involvement in their production was the beginning of today's Silky.・14A4x Inner diameter: 17.09mm Throat / #27 Based on the popular 14A4a, this mouthpiece features a large "X" backbore that creates a very open playing feel. This backbore improves the playing ease and expands the sound of the piccolo trumpet, and is also ideal for the Eb soprano cornet. *If the item is in stock at the store or importer, it can usually be ordered and shipped within 3-4 days. If the item is not in stock at the store or importer, we may place an order with the manufacturer in the country of origin. It may take several months (approximately 3-4 months). Please contact us for detailed stock status and delivery information.