Well, I'm not fastsky, but I assume you're talking to me. Yes, that is what was on the back of the package that my last three blader was in. I had a 12 X 6 2b on it, and ended up going with the 11X7 because of the chart on the prop packaging. It was counter-intuitive to everything I'd always heard, but it seems to work just fine. My .56 saito seems to run at the same rpm's with the 11 X 7 3 b as it did with the 12 X 6 2b. Go figure.....