Back Bach Trombone Mouthpiece 1 Silver Plated Finish Thick 3411HG 1/2G (For Pipe)

This model with a large cup has a powerful and distant bass range. It has been used as a standard model for bass trombonists for many years. ■Diameter: 27mm ■Cup depth: D (deep) ■Rim thickness: MW (medium), fairly round rim.