Alright so I can't exactly remember but i recently fixed my Acoustic guitar and the only strings I had were 12 gauge ones (I think), so I put those on and I don't know if they were 12 or 11 or what. But i just know they were thicker. so I have them at Drop C tuning, and they feel as tight as normal strings would be Standardly.

The question is "Will they go up to standard without breaking or are they meant for being tuned down one step and Drop C"

I figured they were meant for Tune down one step but I wasnt sure.