I can not say I am impressed. Bought 2 props. Both props ends were over twisted on the tips it seems and one of them had a very visible warp in the trailing edge mid prop. Causes very bad prop chopping and gives the plane the shimmie shakes. Second prop seems ok, but I may be searching for another brand for my next purchase. Might be cheap spares or something. To be fair I have not flown either of them, just a bench test.