Just got my 3 sets. They do look very nice, bit of I shame I have to drill them to 8mm if I want to use them on my TBS though... Good thing they're so darn cheap! I'll test these on my F450 first I think, gonna bash the heck out of them and see what happens.
Now, they're definitely softer than Graupners. These don't seem to have any kind of glass fiber or carbon inside, the thick hub and thickness of the blades near the center is what makes them stiffer than the regular Gemfan plastic props. Still, 5 euros for a set of 4, that is an awesome price!
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