HSD45501 DS455M Digital Servo • Faster speed with high torque performance, allowing helicopter to perform with faster and higher precision. • High rigidity, shock resistant metal gears with high strength composite alloy gears with durable structure characteristics. • Aluminum alloy mid case construction for instantaneous heat dissipation, maintaining servo's high efficiency. • Supports digital & analog control signal. • Powerful and precise servo, suitable for T-Rex 250/450 rudder use. • Supports 8.4v high voltage input to provide optimal speed and torque performance of the servo. Specification: • Stall torque: 2.2kg.cm(6.0V) 2.9kg.cm(8.4V) • Motion speed: 0.05sec/60°(6.0V) 0.04sec/60°(8.4V) • Rating voltage: DC 6.0-8.4V • Temperature range: -20°C ~ +60°C • Dimension: 23 x 12 x 31.3mm • Weight: 20g Accessories: • DS450 Digital Servo x 1 • Socket Button Head Self Tapping Screw x 2 • Socket Screw x 1 • Servo Arm x 2