Hobbypower X525 Quadcopter Glass Fiber Folding Kit ARF With Mini KK2.15 Flight Control Board  + 1000KV Motor +30A ESC Not assembled,just a kit X525 V3 fordling frame , CC3D Flight Controller XXD 2212 KV1000 brushless motor with propelleradapter Hint: before using them , you should make all ESCs be adjustment and synchronous by using your remote controller: initial adjust ESC steps: 1.open the transmitter.(put the throttle to max) 2.connect the reciever 3 ch and brushless motors. 3. switch on the ESC power . heart the motor . drip drip.. two sounds. then put the throttle to minimum...and can hear drip...drip..drip..few times long beep. that is ok , it can work well