Meyer 6MM (for alto saxophone). Medium facing, medium chamber specifications. I purchased this item used. It was sold as a selection by Masahiro Fujiryō of the Tropical Jazz Orchestra, although there is no proof of this. Please check the photos for discoloration and scratches from the ligature. The rails are relatively clean, and it takes a lot of air, producing a dark tone. I liked it, but the 5MM suits me better, so I'm selling this as I don't use it. There are no accessories such as a box. Only the mouthpiece itself. It will be wrapped in cushioning material for shipping. Please understand that this is a used item and that individual perceptions may vary. Please purchase with the understanding that no claims or returns will be accepted.