Item Type: RC Servo Material: Plastic, Aluminum, Copper Product Size: Approx. 54 x 45.5 x 20mm / 2.13 x 1.79 x 0.79in Product Wire Length: Approx. 385mm/15.16in (Including Plug) Color: Black and White Working Voltage: DC 4.8-7.4V Torsion: 20kg-cm/4.8v, 25kg-cm/7.4v Speed: 0.14s/60/4.8v, 0.12s/60/7.4v Deadband: 3s Angle: 180 Degrees (PWM 500-2500US) Motor Type: DC Motor Gear Type: Copper Aluminum Operating Frequency: 50-333HZ Suitable for 1/10 1/8 Crawler, Off Road Vehicle, Truck, RC Car, Robotic Arm, 4 Axes Drone and Other RC Devices 1PREMIUM MATERIAL: RC servo is made of premium plastic plus aluminum material, with flat surface, sturdy and durable, stable performance and long service life. 2METAL GEAR: This RC servo has stable construction material, internal copper and aluminum gear can withstand higher loads to ensure the normal operation of the servo. 3HIGH TORSION: RC high torsion digital metal gear servo, equipped with aluminum alloy housing, sturdy copper and aluminum gears, maximum torsion of 20kg?cm/4.8V. 4HIGH PERFORMANCE: Waterproof design RC digital servo with high accuracy gears, high efficiency, low noise, low power consumption and quick response during operation. 5WIDE COMPATIBILITY: 20KG digital servo is compatible with 1/10 1/8 crawlers, off road vehicles, trucks, RC cars, robotic arms, 4 axes drones, etc. Easy to install and disassemble.1 xRC Servo 1 x 25T Servo Arm 1 x Screw 1. Manual measurement, please allow 0.04?0.12in error. 2. Due to differences between different monitors, the pictures may not reflect the actual color of the item.