Feature: 1. Compatible for 400-450 aircraft or RC helicopter, widely applications. 2. Output, continuous 30A, burst 40A up to 10 seconds. High efficiency and reliable. 3. Input voltage: 2-3cells lithium battery or 5-9 cells NiCd/NIMh battery. 4. BEC: 2A / 5V (Linear mode). Maximum speed 210,000rpm for 2 Poles BLM, 70,000rpm for 6 poles BLM, 35,000rpm for 12 poles BLM. 5. With T plug and 3.5mm banana connectors, easy and convenient for installation. Specification: Condition: 100% Brand New Item Type: RC Plane Parts Material: ABS + Electronic Components Type: 2200KV Motor + 6035 Propeller + 9G Servo + 30A ESC SG90A 9G Servo: Size: Approx. 21.5 x 11.8 x 22.7mm / 0.8 x 0.5 x 0.9in Weight: 9 g / 0.3 oz(approx.) No-Load Speed: 0.12 seconds / 60 degrees (4.8V) Blocking : 1.5-1.7kg/cm (4.8V-6V) Working Temperature: -30 ~ + 60 ℃ Dead Zone Setting: 5 microseconds Working Voltage: 4.8V-6V A2212 2200kV Motor: 2200 KV: Ri Ω (M) : 0.033 Battery: 2-3 li - Po Maximum Power: 342W Test Item: 7x3/7x4 Motor Size: Approx. 27.5 x 38mm / 1.1 x 1.5in Shaft Diameter: Approx. 3.17mm / 0.1in Package List: 2 x 9G SG90 Servo 1 x A2212 KV2200 Brushless Motor 2 x 6035 Propeller 1 x 30A ESC 2 x Propeller Gasket Note: This ESC cannot refreshing the firmware.