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Excellent product, 30 percent less current draw that genuine APC SF 10x4,7 but roughly same performance. Static thrust much better than APC 10X5, while same current drain ! Moreover, no audible vibrations. Top class product.These are pretty nice props. They look great on larger models.They're wood props, they reduce vibration all by themselves.
It's the only material that won't explode in mid air when temps are anything below "scorching sun"
The ideal size for 450-550 quadcopters.
They're identical to Gemfan brand props.Excellent props, I bought them for my Turnigy HAL as the standard nylon 10x4.5 SF props get brittle in cold weather.
They look really well made and only required a little balancing.