Yeah I got some for my Quanum nova which is just the Cheerson-CX 20 re-labled.
The brakets were cheap but I spent $10 at least on screws because I was too fat and lazy to work out what size I exactly needed. M3 x 12Mm seems to have fit well, there in but I haven't flown it since adding them yet.
*edit* this is the wrong size screw, killed my motors..
http://www.ebay.com/itm/Cheerson-CX-20- ... 5b0ab348fe
http://www.ebay.com/itm/360800564758?_t ... EBIDX%3AIT
When I got my quad I took it to my local park for my first fly and what I found secretly amusing was how I could barely control it since I barely knew what I was doing but folks would walk right past it with out the remotest inkling of fear and little interest, they just all assumed I knew exactly what I was doing, I did try to at least look like I did know what I was doing. I wonder how secretly amusing it would be for me if I took someones eye out.
Nothing like that ever happened though, one time I crashed into some tree branches then hit the ground with a decent thud and these dogs ran down and stood guard around it like real troops and waited for me or at least someone to arrive, wish I had that on video was funny as they were quite visually most concerned about the situation.