?All-metal Manufacturing?ML2212 motor maximum speed of up to 20,000 rpm, high-speed motor is a challenge for the bearing and shaft, therefore, we installed the original NMB imported bearings in the ML2212 motor, the axis of the material has been switch to HRC55 degrees of stainless steel, to improved the defect that the axis easy to wear. ?High-temperature enameled wire?ML2212 motor with a 200 grade high-temperature enameled wire, outlet sets of double heat-shrinkable tube, not easy to be damaged, better protection of the copper wire from damage. ?Brushless Design?Our ML2212 motor rotor is subjected to high-speed balance correction, so that the vibration of motor is smaller at a high speed, the flight is more stable! ?More Rigorous Manufacturing?ML2212 motor rotor with fan-style design, its inside will produces a strong airflow at a high speed, to cool the coil directly and keep the motor cool. ?Our Warranty ?This ML2212 920KV Brushless Motor includes 12 months seller's guarantee and 24 Hours all day friendly customer service.