Measured all 3 of my megaminxs(chinaminx, QJ, mf8). They were all the same size give or take a mm or two.. each edg is approx 33mm. between a slice it is approx 40mm with splits at ~14 and ~26. I have not purchased a dayan yet, but If its measurements match you should be fine with any standard minx set. Unfortunately, with the growing number of brands with minute size difference of various puzzles. It seems like standard sets are what we are stuck with. I look forward to stickering my mini 7x7. and still need new stickers for my latch cube.