1、Aluminum Shell: Using high quality aluminum alloy shell, the digital servo is sturdy, durable, anti corrosion, to ensure durability. 2、Metal Gear: The metal gear can withstand higher loads to ensure the normal operation of the steering gear. 3、High Performance: High efficiency during operation, low noise, low power consumption, and convenient installation and disassembly. 4、Servo Arms: The package contains different servo arms to meet your needs and bring you convenience. 5、Applicable Models: With high precision, digital control, high reliability, the digital servo is specially designed for RC fixed wing airplane. Item Type: RC Digital Servo Shell Material: Aluminum Alloy Product Color: Black Servo Weight: 80g / 2.8oz (without cables) Product Weight: Approx. 240g / 8.5oz Working Temperature: -10℃- +60℃ Working Frequency: 1520us/333Hz Application: Suitable for RC Racing HelicopterTest Parameters     voltage 6V 7.4V 8.4Vspeed 0.1sec/60° 0.08sec/60° 0.07sec/60° Torque 17.5kg.cm 22kg.cm 25kg.cm Working Current 700mA 800mA 900mAStall Current 3000mA 3500mA 4000mA Dead Band Width 2u 2u 2u 1 x Servo 4 x Servo Arm 5 x Screw 4 x Screw Anti Skid Tube 4 x Rubber Pad 1 x Manual