I bought that pack since my original insert broke, I don't see any differences between my original ones and those, so looks like there are no reason to overpay for a original floyd rose inserts that cost higher (not talking about titanium ones)
I bought them for my FR 1000, not sure if it will fit for Schaller or Gotoh (even if they are bigger, sandpaper is your help) but it should fit for all FR tremolos that are made by Floyd Rose