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Check out "Vessel Famidora 8 TD-800" on eBay or other places! It's a lovely kit and affordable enough for me in USA to stockpile them.

Cheers for the recommendation. Doesn't seem to be JIS though? It can be hard to tell and I'm no expert at all, but they seem to be normal Philips.

Could be a mistranslation thing. They lock into my vintage Japanese stuff really nicely in such a way as to make me think JIS.