The CYS-S8221 is a well designed and high quality servo which is digital, fitted with titanium gears for reliability. It is made of high quality material, which may make your operation much more remarkable.<br><br>Features: <br>Easy to install<br>Made of aluminum alloy material<br>Stall torgue of 1.0kg.cm(4.8V), 1.2kg.cm (6.0V)<br>High precision titanium gear<br>Suit for 450 RC helicopter<br><br>Specifications:<br>Brand: CYS<br>Item No.: S8221<br>Material: aluminum alloy<br>Operating Voltage: 4.8V-6.0VVolts<br>Operating Temperature Range: (-)10 to +50 degree C<br>Operating Speed (4.8V): 0.10sec/60&deg; at no load<br>Operating Speed (6.0V): 0.08sec/60&deg; at no load<br>Stall Torque (4.8V): 1.0kg.cm<br>Stall Torque (6.0V): 1.2kg.cm<br>Connector wire: about 180mm<br>Item size: 22.9 * 12 * 25.4mm (L * W * H)<br>Item weight: 17.8g<br><br>Package Information:<br>Package size: 4 * 3.5 * 2.5cm / 1.6 * 1.4 * 1.0in<br>Package weight: 22g / 0.8oz<br>Gift box package<br><br>Package List:<br>1 * CYS-S8221 Digital Servo