Feature:1. Made of highquality materials, sturdy and durable, anticorrosion, to ensure durability.2. Highquality and durable, equipped with plastic gears, high precise and digital control.3. Metal gear can withstand higher loads to ensure the normal operation of the steering gear.4. High efficiency during operation, low noise, low power consumption, and convenient installation and disassembly.5. The package contains different servo arms to meet your needs and bring you convenience.Specification:Item Type: Remote Control Helicopter ServoMaterial: Plastic + MetalColor: BlackWeight: Approx.22g/0.8ozWorking Voltage: DC 4.8V-6VOutput Torque: 2.25kg/cm (4.8v) / 2.7kg/cm (6v)Output Speed: 0.12s/60(4.8v)/ 0.10s/60(6v)Working Frequency: 1520us/333HZWorking Angle: 180Application: for FW450 Remote Control Helicopter, Fixed Wing, Etc..Package List:1 x Servo3 x Servo Arm1 x Screw