You know what, I'm actually not sure what the prop is. I believe that it's actually the stock brass prop. It's a 3 blade and it's intended for skiing (1981=no wakeboarding yet). I think it's more of a speed prop, but hole shot is still fine, even with tandem riders and ballast in place. I will be looking to get a 4 blade at some point to up the rpms in the hole shot a bit and ease the load on the engine.