Description: This item is a digital servo steering gear for SG90, which adopts metal gear structures, featuring high-speed and stable. It fits for all kinds of R/C toys, not advise for big fixed-wing toys and big helicopter. Features: Color: As the pictures shown. Material: ABS. Size: About 2.3 x 1.22 x2.9cm. Torsional moment: 1.6kg/cm. Working Voltage: 4.8V. Temperature range: 0℃ - 55℃. Rotation Angel:180° Operating speed: 0.1 seconds /60 degree. Dead band width: 10 microseconds. Gear Medium: Nylon. Working Mode: Simulation. Brand new and high quality, durable to use. This is the most popular mini servo. Only weights 9 gram and gives you a 1.5kg.cm torque. Suitable for Beam type robot. Light weight and less Noise. Accessories Include:Steering gear,rocker arm,screw,etc Note: 1.Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before your purchase. 2.The colors may have different as the difference display,pls understand.