Marcinkiewicz 6E Mouthpiece for Trombone KS, Mouthpiece for Tenor Trombone, Small shank, Outer diameter: 38.96 mm, Inner diameter: 25.78 mm, Cup depth: 26.54 mm, Bore: 6.35 mm, Total length: 80.52 mm, Colour: Silver-plated, Comparable to Bach 3
