Welcome to the store! This SG90 9G micro servo weighs only 9g/0.3oz and has a torque of 1.5 kg/cm. The 30A ESC has a safety arming feature, throttle calibration function, and supports multiple programming methods. Compatible with Li-ion and nickel-cadmium batteries, and the timing can be changed to suit different brushless motors. Comprehensive protection including low-voltage cutoff protection, over-heat protection, and throttle signal loss protection. Compatible with remote control helicopters, made of high-quality metal and plastic, easy to install, and performs well. Item Type: Helicopter Fixed Wing Set Material: Metal + plastic Color: As picture shown Weight: Approx. 143.0 g/5.0 oz SG90 9G Servo: Length: Approx. 21.5 mm/0.8 in Width: Approx. 11.8 mm/0.5 in Height: Approx. 22.7 mm/0.9 in Weight: 9g/0.3oz No load speed: 0.12 seconds / 60 degrees (4.8 V) Stall torque: 1.5-1.7 kg/cm (4.8V-6V) Operating temperature: -30 to +60 degrees Celsius Dead zone setting: 5 microseconds Operating voltage: 4.8V-6V 2212 Motor: Length: Approx. 30 mm/1.2 in Width: Approx. 27.5 mm/1.1 in Shaft diameter: Approx. 3.17 mm/0.1 in kv: 1400kv 30A ESC: Connector: XT60 Continuous current: 30A Maximum current: 40A (10S) Power: 2-3 pcs Li-ion batteries or 5-9 pcs nickel-cadmium batteries (not included) BEC output: 2A / 5V (Linear Regulator Mode-Linear Mode) Maximum speed: 2-pole BLM is 210,000 rpm, 6-pole BLM is 70,000 rpm, 12-pole BLM is 35,000 rpm Application: RC Helicopter Includes: 1 x Motor 2 x Propeller 2 x Servo 1 x ESC 1 x Motor base 1 x Motor head 6 x Servo arm 1 x Strap 10 x Screw 2 row x Propeller gasket