Firstly, know that I am a complete beginner and know nothing. However, I absolutely love these props! They are are strong and have a stiff flex. I've tumbled into the ground a few times and hit grass-reeds without any damage, only marks. I only intend to freestyle and certainly will be buying more of theses. My first orders were for another brand 51x51x3 and those are totally too much for my needs yet as a beginner. Plus my first tumble damaged one of that other brand a bit easily. I already have more of these 5045 bi-blades waiting in my cart.
Reviewed by: (Verified Buyer) _nd from Thiboduax.