Item Type: Metal Gear Servo Material: Copper, electronic components Gear Material: Metal Gross Weight: 25g / 0.9oz Working Voltage: 5V-8.4V Working Torque:2.0, 5.0kg.cm Working Speed: 0.12/0.055s/60Degree Servo: Digital Servo Package List 1 x Metal Gear Servo 4 x Plastic Servo Arm 5 x Screw 1. Please allow 13mm error due to manual measurement. Please make sure you don't mind before ordering;2. Due to different shooting lights and different monitors, the pictures may not reflect the actual color of the real object. Please make sure you don't mind before ordering, thank you 1Metal Gear: The digital steering gear is equipped with mini metal gear, which is shockproof, low noise and stable in performance. 2Durable Materials: Metal gear servo is made of premium copper and electronic components materials, wear resistant, light in weight and not easy to be damaged. 3Scope of Application: Micro digital servo is suitable for RC helicopter, flying airplane, glider, small robot and other RC models. 4Working Specification: Working voltage of this metal gear digital servo is 5V to 8.4V, working torque is 2.0, 5.0kg.cm, working speed is 0.12, 0.09s per 60 degree. 5Replacement Part: Mini digital servo is easy to install, you can replace the old or damaged parts to obtain higher strength.