Feature: 1. SG90 9G micro servo with a torque of 1.5 kg/cm. 2. 30A ESC, safety arming function, throttle calibration function, support multiple program methods. 3. Compatible with lithium batteries. The time can be changed to suit different brushless motors. 4. Comprehensive protection, low pressure cut‑off protection/overheat protection/throttle signal loss protection. 5. Wonderful accessory for remote control aircraft. Specification: Item type: RC Aircraft AccessoryMaterial: Plastic + MetalColor: As picture shownWeight: Approx. 136g SG90 9g servo parameters: Size: Approx. 21.5x11.8x22.7mm/0.8x0.5x0.9in No-load speed: 0.12 seconds / 60 degrees (4.8 V) Locked-rotor torque: 1.5-1.7kg/cm (4.8V-6V) Working temperature: -30℃~ + 60 ℃ Dead zone setting: 5 microseconds Working voltage: 4.8V-6V 2212 motor specifications: Motor size: Approx. 27.5x 30mm/1.1x1.2in Shaft diameter: Approx. 3.17mm/0.1in KV: 2200KV 30A ESC specifications: Plug: XT60 Continuous current: 30A Maximum current: 40A (10S) Power input: 2-3 lithium batteries or 5-9 nickel-cadmium batteries (not included) BEC output: 2A / 5V (linear regulator mode-linear mode) Maximum speed: 210,000rpm for a 2-pole BLM, 70,000rpm for a 6-pole BLM, and 35,000rpm for a 12-pole BLM. Application: RC remote control drone . Package List: 1 x Motor2 x Propeller2 x Servo1 x ESC1 x Motor base1 x Projectile heads6 x Servo arm1 x Fixing belt10 x Screw2Rows x Propeller washer