Willie's TL BP0 Gold-plated GP, Large Shank Bass Trombone Mouthpiece ★Cup Diameter: 27.95mm ★Throat: 8.0mm BP0...Combination of 1-1/4G rim and 1G cup ★After purchasing this used item, I have test-played it a few times. *The original box is not included. It will be shipped with cushioning material (bubble wrap). There are insertion marks on the shank, but no dents or deformation. The previous owner purchased it in 2019 and used it for about 2 years. Supervised by Thomas Leyendecker of the Berlin Philharmonic Orchestra. With a deep cup relative to the rim diameter, it combines control and the fullness of the mid-low range. By adopting a heavy blank, you can obtain a sense of weight and stability. Also suitable for tenor players switching to bass.