2X Doubler matched to 70-150mm f3.8 Vivitar Lens Pentax SM (No 36)
item #PentaxSMdoublerNo36. This doubler is matched to the vivitar 70-150mm Vivitar lens in Pentax Screw Mount. See the lens page for the matching lens to this doubler. You may use this doubler with any lens if desired. Condition 10-.