Bought several years ago, never used and never seen the water, new in box
Label description is #18453, Macro Port Extension f/ 105 mm / 2.8 AF Micro Nikkor & Canon 100 mm f/2.8 Macro
Same as this
http://www.bhphotovideo.com/c/product/125849-REG/Aquatica_18453_Port_Extension.html
Retails for $232.
$150 plus shipping
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