HOBBYHOT8482; LEOPARD SKYRC 3930KV 10T Brushless Motor & 60A ESC Speed Controller Combo ME718 with Android Apps Special Bundle Rotational Speed:3930 KV Turns of the Motor: 10T Max. Amps: 42A Resistance: 0.0152ohm Motor Dimensions (Diameter x Length): 35.8mm x 50mm