Quick Release Prop Guards

[hugomez]

Hi, anybody has tried the quick release prop guards that are for sale on Ebay for less than $5 including shipping? they even include the prop guards. I find it extremely cheap, but I am concern about the quality. If anybody have tried them would be great to know.

 

[Dirby]

I watched the video in the begining of the post.
it seems to me that this guy that was doing the video has no idea what he is talking about.