The props have only been used a couple of hours. Unmarked. What boat/ engine have you got, I have got a set of C4 s/s props which are like new, which will give you even more performance
I've heard that B's and C's aren't interchangeable. Is that not the case? I was led to believe that you could adjust pitch by selcting B6's for example, but the letter had to remain the same???