Marcinkiewicz 0 Mouthpiece for Trumpet, Mouthpiece for trumpet, Size: 0, Outer diameter: 27.46 mm, Inner diameter 17.73 mm, Cup depth: 13.08 mm, Bore: 3.66 mm, Total length 87.63 mm, Rim contour: Medium round, Silver-plated, The rim is comparable to a Bach 5B