Size 5GCup Depth is DeepRim Shape Med Wide Semi FlatModel No. / Depth of Cup / Approx. Cup Dia. / Rim Shape / Throat / Backbore / Description 1G / Deep / 28.00 mm / Medium thin, well rounded.1-1/4G / Deep / 27.50 mm / Medium thin, well rounded. / .276" / 429Cup diameter is smaller than No.1G, but still very large and deep, with the sonority preferred by the modern American school. 1-1/4
Mouthpiece, Trombone Large Shank, Bach Silver Plate, 5G Cup: Deep, Cup Diameter: 25.50mm
Brand: Vincent Bach, Model: 3415G, Color: Silver-Plated, Size: 5G