There is no such a thing as a 5.3 gallon fuel can. The can pictured in the ad for the holder is the Blitz style Jerry can.
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I can’t imagine anyone would describe real Wavian cans as cheap Chinese metal cans.
Where did you get your cans?
I thought they were Wavian because I did see them on amazon but they indeed are not Wavian my apologies
I did order Wavian today according to their website they should sit on the holders without any issue