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Amazon.com: QWinOut 40A ESC 2-4S Brushless ESC Speed Controller 5V/3A BEC for F450 450mm S500 ZD550 RC Helicopter Quadcopter DIY Drone Kit (6 Pcs,Short Cable) : Toys & Games
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Amazon.com: QWinOut 40A ESC 2-4S Brushless ESC Speed Controller 5V/3A BEC for F450 450mm S500 ZD550 RC Helicopter Quadcopter DIY Drone Kit (4 Pcs,Long Cable) : Toys & Games
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Amazon.com: QWinOut 40A ESC 2-4S Brushless ESC Speed Controller 5V/3A BEC for F450 450mm S500 ZD550 RC Helicopter Quadcopter DIY Drone Kit (4 Pcs,Short Cable) : Toys & Games
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