Glanz YT tutti Large Bore Silver - Brand: Glanz - Mouthpiece Type: Trombone Mouthpiece - Accessories: Box Thank you for viewing. I purchased this from Low Brass Center last December, but I'm not using it anymore, so I'm putting it up for sale. When I was taking it out to list it, I dropped it with the box, and the tip of the shank got dented, but it has been repaired. It now fits my instrument without any wobble. Therefore, I have included detailed images of the shank. My personal playing experience is that the air flows smoothly, and it has a sound with a sense of weight. This is a used item, so please refrain from purchasing if you are looking for perfection.