I bought these for my AP quadcopter, for my Tiger MT2814 motors. These props are rigid enough to fulfill my need for no jello while filming from the air. Unfortunately ALL of them are out of balance and it took me more than 1 hour of balancing just one. It was not an easy job because I had to cut some material even from the hub. When balanced, these are of good use!
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Perfect propellers, almost as original APC, production quality is perfect.
U can check balance and go fly.I hawe combined with 11x5.5 standard propellers on hydroplane.