2200KV Brushless Motor: 1. Motor Dimensions: 27.7*26.3mm 2. Shaft Size: 3.17*37mm 3. Max current:31.5A 4. ESC:40A. 1800KV Brushless Motor:1. Motor Dimensions: 27.7*26.3mm2. Shaft Size: 3.17*37mm3. Prop/ recom: 7x4/7x34. Weight:50g5. Idle current: 1.8A6. Max current:31.5A7. ESC:40A8. Rohs complaint.Sincerely wish to start a good cooperation with you ! 2200KV RC Brushless motor