These are small but great for baby succulents and other small props. Each cell is 1.5" x 1.5" and 2.25" deep. It doesn't come with holding trays, you have to get those separately or buy a different bundle, but the price is great for 120 little 6-cell packs. They're not nursery standard; they're smaller than that. I bought this pack last spring and have gotten so much use out of them! They're thin and cheap but when you're just raising up small plants, they're great. I grow my garden seedlings in them too to start with, except for the largest items. ๐