Marcinkiewicz 10 Mouthpiece for Trombone KS, Mouthpiece Trombone, Small shank, Outer diameter: 38.86 mm, Internal diameter: 25.37 mm, Cup depth: 23.85 mm, Bore: 5.94 mm, Total length: 80.52 mm, Colour: silver plated, Comparable to Bach 7C
