Hitec HS-755HB Sail Winch Servo:
A High Torque, Arm-Type Sail Servo with a Karbonite Gear Set.
FEATURES: The 755 replaced the popular 700BB and offers stronger torque for improved performance. The Karbonite gears are four times stronger than the standard nylon and even after hundreds of thousands of cycles it will not show any signs of wear.
Torque: 153oz/in at 4.8V and 183 oz/in at 6V