Yamaha Bass Trombone Mouthpiece 58

Produced using the most advanced computer design and manufacturing technology, Yamaha Standard Series mouthpieces feature unmatched precision, smooth attack, secure control and easy playability. The 58 has a medium cup and rim for easily playability through the low and middle registers and offers a crisp attack with outstanding flexibility. Similar to a Bach 2G Inner Diameter = 26.84mm. Contour = standard . Thickness= standard. Cut Depth = standard. Throat = 7.25mm. Backbone = semi-wide.