Mamiya 645 PRO TL 120mm/4 macro lens FRONT + MIDDLE GLASS ELEMENT SET.  This is a brand new part for replacement if the glass elements in your 645 PRO TL / 645 PRO 120mm macro lens needs to be replaced.  This is a Mamiya factory brand new spare part (NOT a salvaged glass element from used lenses).  The glass elements are crystal clean and no problems whatsoever.  (this is for the FRONT + MIDDLE glass assemblies only, the 120mm lens also has a rear glass assembly/element)