I did a lot of searching for the post mounted one. Just an opener.
99% of the ones I ran across were for early POP cans, before the days of pull tabs, not oil cans.
There is a measurable difference in size. I knew they existed, only because I had seen a photo of a guy using one.

Edit: Flexible one is top, got the description entered wrong
Pole mount is the bottom one.

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Flexible rubber spout

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Last edited by Gaspedler; Mon Feb 24 2020 06:57 AM.