Having these on your evo2 airframe will provide some protection by helping you avoid damaging your propellers in flight, which could result in a catastrophic crash. I don’t know how much force they will withstand, but they appear to be capable of withstanding minor collisions, which is all i am worried about, conforms well to the evo2 body design and gives good protection to the propellers. The clips are a little delicate, though, forcing you to be careful in opening and locking them. The guards are pretty good, but they could be better. They do not protect the front middle or back middle. They also do not protect the props from the top at all. Music, having said that, i understand that they are playing a balancing game between prop protection and weight and performance issues anyway.

https://www.youtube.com/watch?v=LZKHpUNFa1Q