The 10mfan Robusto mouthpiece has a medium height, medium length baffle, flat sidewalls, with a med-large chamber.  It is designed to have a “hard bop ny tenor sound”.   An 8* tip opening for 10mfan is 0.115″ .  There is a very small chip in the side rail that should not affect playability.  This one comes with a Rico HTS1 ligature.