Yeah, I think I got a different set, the Soul Source ones. They're all 9" long and 1 1/8" or 29mm, 1 1/4" or 32mm, 1 3/8" or 35mm and 1 1/2" or 38mm. I started using #2 immediately. (I hear that now Brassard skips #1 entirely, as a matter of fact, but when I was there over 2 years go it was #1 and #2 for the first day and the next month.) We got to #3 for the second month, and #4 at the beginning of the 4th month.
I never had too much trouble getting any of them in, but that's probably because the dilation schedule was designed to gradually ease up to it. The first couple tries with each bigger dilator would be a little stretchy and ouchy, but not severely so.
Be warned that depth might be less with a bigger dilator - the more the vagina has to stretch *around* it, the less it can stretch *out.* I eventually regained my original full depth even with the biggest, but it took some time, presumably as the skin actually did gently stretch to be a permanently larger surface area overall (this is my conclusion based on the fact that when I tested out of curiosity after a year or so, I now have extra depth with the slender #1 dilator).