I've had several charm packs, not sure of the brands, that were not square. I've had to go through every single one & square them up! Grrr! One pack I had to square up to 4-7/8". Very frustrating! I've pretty much quick buying pre-cuts for this reason, with the exception of honey-buns or maybe an occas. jelly roll. It's easier in the long run to cut my own fabric & have it accurate. Also cheaper. JCY