In my haste I bought a couple "Lots" of shells, and most of them have teeny shells and huge shells my babies won't fit into at all or at the moment. It isn't worth it for me to keep them around until they might fit in the big ones. I would ideally like to swap them for shells that will fit my boys (3/4" & 1") but I will sell them for a nominal fee (Shipping costs and a tiny bit to put in my shell buying fund) If you would like any more info on them PM me. I measured them, and the largest shells are 1 3/4, 1 1/2, and 1 1/4. There are 13 shells that are 1/2" - 5/8" & 7 that are 3/8"