We have had a Pro Zinger 26 X 10W shed a blade recently, and the results wern't pretty.......the engine departed the airframe at approx. 200 ft agl and came to rest neatly in the center of our PAVED runway. Needless to say, I wouldn't recommend these props for 3D flying. This occured during a snap roll, causing approx. 1/2 of one blade to seperate. It immediatly shook the engine and front half of the fuse loose, applying full throttle which finished the job. My recommendation? Don't buy cheap props!