The ones in the Amazon link appear to look like the original "latch lock" style but I'll be damned if I can see any ribs.
Having the ribs appears to be the only requirement for the Legends judging for the refills, near as I can tell. No other manufacturer would have made them with the ribs, I would assume.
"Refills should be the correct Trico 3-ribbed refills."
Bob
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