Features 1、S2500M 25KG Digital servo equipped with metal gear, high precise, not easy to deform. 2、High quality plastic and aluminum material, and has been treated with precise process to ensure durability. 3、High efficiency during operation, low noise, low power consumption, easy to install and disassemble. 4、Metal gears can withstand higher loads and ensure proper servo operation. 5、Suitable for 1/8 and 1/10 RC model, including 5pcs servo arm of the package to meet your different demands. Item Type: Servo Material: Plastic, Aluminum Model: S2500M Color: Black red Stopping Torsion: 7.4V≥28Kgf.cm.6.0V≥22Kgf.cm No Load Speed: 6.0V≤ 0.26sec / 60°; 7.4V≤0.22sec/ 60° Operating Angle: 180°±10° (500 ~ 2500μs) Mechanical Angle: 360° Enclosure Material: PA + 30% GF, aluminum medium shell Gear Set Material: Metal gear Motor Type: DC motor Size: Approx. 44.3 x 40 x 20mm / 1.7 x 1.6 x 0.8in Fitment: Fit for 1/8 1/10 RC Model Installation Instructions: 1. Install the steering gear to the steering gear base first, and do not install the steering gear arm or the steering gear protection. Fix the steering gear to frame only. Then the steering gear is connected to the receiver, generally CH1 or ST socket is divided into three wires. Bottom line, VCC, signal /PWN. 2. After the steering gear is fixed, turn on the remote control, set up and turn on the ESC, and then the steering gear will stop in a fixed position 3. In the case of not closing the remote control and steering gear, the steering gear protection or steering gear arm is installed to the steering gear output teeth Note: 1. There will be differences in the installation of steering gear of different grams, so the actual installation shall prevail. 2. Different grams of steering gear will have different accessories. Please refer to the real objects in the package. Package List 1 x 25KG Servo 5 x Servo Arm 5 x Screw 8 x Accessory 1 x Manual