Welcome to our store 1. SG90 9G micro servo, transparent body, lightweight, low noise. 2. 40A ESC, safety arming function, throttle calibration function, supports multiple programming methods. 3. Compatible with lithium batteries. Timing can be adjusted to suit different brushless motors. 4. Comprehensive protection, low-voltage protection/overheat protection/throttle signal loss protection. 5. Wonderful accessory kit for RC airplanes. Item Type: Remote Control Airplane Accessories Material: Plastic + Metal Color: As the picture shown Weight: Approx. 160g SG90 9g Servo Parameters: Size: Approx. 21.5x11.8x22.7 mm / 0.8x0.5x0.9 inch No-load speed: 0.12 seconds / 60 degrees (4.8V) Locked-rotor torque: 1.5-1.7 kg/cm (4.8V-6V) Operating temperature: -30℃ ~ +60℃ Dead zone setting: 5 microseconds Operating voltage: 4.8V-6V 2217 Motor Specifications: Size: Approx. 27.8 x 32 mm / 1.1 x 1.3 inch Shaft diameter: Approx. 4 mm / 0.16 inch KV: 2300KV 40A ESC Specifications: Plug: XT60 Continuous current: 40A Maximum current: 55A (10S) Power input: 2~4 lithium batteries (battery not included) BEC output: 5V @ 3A (linear regulator mode) Maximum speed: 210,000 rpm for a 2-pole motor, 7000 rpm for a 6-pole motor, 35,000 rpm for a 12-pole motor Use: RC remote control drone 1 x Motor 2 x Propellers 2 x Servos 1 x ESC 1 x Motor Base 1 x Projectile Heads 6 x Servo Arms 1 x Fixing Belt 10 x Screws 2 Rows x Propeller Pad Customers are our top priority. If you find any problems with your product after receiving it, such as damage or incorrect quantity, please contact us immediately. We strive to provide you with the best service.