This motor is 2 poles slotless sensorless motor Model No: ST380L size:Φ28mm*48mm Advantages: (1. Welcome OEM/ODM (2. Meet CE & RoHS  (3. Imported bearing  (4. High quality magnet  (5. All material can work nomally at high temperature  (6.Strong power (7.It's can used with airplane and 1/12, 1/10car, and boat model,We can add golden connector according customer requirement Maximum RPM: 50000 Payment Details︰ T/T(Payment before shippment) Export Markets︰ Any country Min Order: 20pcs Ship Date︰ A week after payment received