HCA: Hermit Crab Association

I just ordered three new shells from Shells Of Aquarius! A spotted turbo, a tapestry turbo and a silver polished pica for my crabs to try on.

I am looking on their website right now and it doesn't look like you can order exact sizes. When you placed your order do you know what sizes you are getting?

Update: I got them in today, Thursday March 8. The pertholatus is a 7/8" opening, the spotted turbo is a 1 inch opening and the silver pica is a 1 inch opening.