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Aetna Extension 3 Tube set for M42 Screw Mount Cameras, Pentax, Mamiya, Yashica
The 3 extension tubes are : 11mm, 18mm and 29mm.
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Aetna Extension 3 Tube set for Nikon Cameras 13mm 31mm 21mm
Extension tube is like new. Not sure if it has ever been used. You are getting the exact item in the photos.
