PENTAX M42 MOUNT VIVITAR 2X-1 TELE CONVERTER LENS

HERE IS A GREAT LOOKING (MINT) PENTAX M42 SCREW MOUNT VIVITAR 2X-1 AUTO TELE-CONVERTER LENS WITH END CAPS, LENS CASE AND INSTRUCTIONS.

NO SCRATCHES OR MARKS ON THE GLASS.  NO WEAR ON THE LENS BARREL.

THIS WILL DOUBLE THE FOCAL LENGTH OF YOUR NORMAL PRIME 50MM LENS TO 100MM'S OR DOUBLES ANY TELEPHOTO LENS.  MAKES A 200MM INTO A 400MM ETC.