Lots of luck with the transplant:smokebuds:. How big of a pot are they in, right now and how big of a pot are they going into.
This is what I do: If you can live without that little pot they are in and its plastic, I take a knife and gently cut the bottom out of the little pot and and place it in a bigger pot of dirt (tiered method). That way you don't handle the roots at all:thumbs:. Be careful not to cut the roots if possible though. I have tiered 6 inch pots into 2 gallon pots with no problems. Just throwing my method out there.
I mostly just use 32 oz cups to start my seeds in, and then when they sex, I tier that cup into its final pot. Hope it works out for you