â–*Ultra-clean casting and true center-bore hubs mean that each prop is near its balance point — right out of the package.
â–*Can be fine-tuned with less effort than stainless steel, while holding shape better for balancing, sharpening, and changing pitch.

The auqacraft site does not claim that they are balanced. It states the above. If they were balanced it would say so. And they would likely not have a link for balancing and sharpening instructions.

I'd waiger that what you heard was some people who took them out of the box and ran them and were happy with them.


http://www.aquacraftmodels.com/acces...ropellers.html