This is a plastic student tenor mouthpiece being made by reknowned mouthpiece refacer, Bob Carpenter.  Bob has done a lot of work for us and his work is very good.  This piece is made from an inexpensive plastic blank, but Bob has expertly refaced it and it plays wonderfully, although with a brigher sound quality that you would expect from a plastic mouthpiece.  It responds well top to bottom and plays very evenly.