Best mouthpiece for bass trombone. Recommended for those with less breath control and beginners. The inner rim is gold-plated for a comfortable feel. Purchased about 6 years ago and stored unused. Therefore, there are some areas with slight discoloration. *See images New, unused, but the box is slightly deteriorated. Please be aware of this. [Specifications] - Model: 2G (Large shank) - Type: Bass trombone mouthpiece - Brand: XO - Finish: Gold-plated inner rim - Inner diameter: 26.75mm Thank you for viewing.