Marcinkiewicz 11 Mouthpiece for Trombone KS, Mouthpiece for trombone, Small shaft, Outside Diameter: 38.86 mm, Inner diameter: 25.40 mm, Cup depth: 23.04 mm, Bore: 5.94 mm, Overall length: 80.52 mm, Silver-plated, Comparable to Bach 11C
Thomann Italia