Trombone Mouthpiece for Large Bore Trombones Warwick IANBOUSFIELD Ian Bousfield Model S5 Pink Gold Plated S5 Size Rim Diameter: 25.2mm Throat: 6.83mm The plating is pink gold, which is lovely. *No box or ring. Mouthpiece only. There is some discoloration on the shank from use, but no dents. Please understand that this is a used item before purchasing.