These are the same props that Surveilzone sell with the nickname of the "unbreakable props"
They are formulated from a new mix of PC & Glass that are flexible and more durable than your standard ABS or Glass and nylon composite.
we have put them to the test and they do stand up quite well in most crashes or nicks with branches where the standard props may have chipped.
Spend less time repairing and more time flying.
Sold in packs of 4 (2cw & 2ccw) Quad ready packs