Welcome to our store! This set includes: 1. SG90 9G micro servo with a semi-transparent body: Lightweight, low noise, and high performance. 2. 40A ESC with safety arming feature, throttle calibration, and support for multiple programming methods. 3. ESC is compatible with Li-ion batteries, and timing can be adjusted for various brushless motors. 4. Comprehensive protection: Low-voltage cutoff protection, overheat protection, and throttle signal loss protection. 5. 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 shown in the picture Weight: Approx. 180.0 g/6.3 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: 9 g/0.3 oz 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 2217 Motor: Length: Approx. 50 mm/2.0 in Width: Approx. 27.8 mm/1.1 in Shaft diameter: Approx. 4 mm/0.2 in kv: 1100kv 40A ESC: Plug: XT60 Continuous current: 40A Maximum current: 55A (10S) Power input: 2-4 Li-ion batteries (not included) BEC output: 5V at 3A (Linear Regulator Mode) Maximum speed: 210,000 rpm for a 2-pole motor, 70,000 rpm for a 6-pole motor, 35,000 rpm for a 12-pole motor Application: RC Helicopter Includes: 1 x Motor 2 x Propellers 2 x Servos 1 x ESC 1 x Motor Base 1 x Motor Head 6 x Servo Arms 1 x Strap 10 x Screws 2 rows x Propeller Gasket Customer satisfaction is our top priority. If you encounter any issues with your product upon receipt, such as damage or incorrect quantity, please contact us immediately. We are committed to providing you with the best possible service.