Greg Black Trombone Mouthpiece NEW YORK 5.5 Regular Rim size: 25.95mm Cup size: 5G size I purchased this new about two weeks ago, but I'm selling it because I switched to a different one. There are slight scratches on the shank from use, but there are no problems with its use. If you purchase this item together with other items I have for sale, I will discount 1000 yen for shipping costs.