Powerhobby 579MG High Torque High Speed Digital Brushless Servo 0.07/486oz @ 8.4V

High Performance Standard Digital Servo
Heat Sink Fast Cooling Design
Strengthen High Chrome Steel Shaft
Extra Strong Patent Steel Gears
Super Strong Three Ball Bearings
Long Lifespan Brushless Motor
Programmable Digital Circuit
High Precision Magnetic Sensor
Fully Waterproof Up To IP67 Grade
Ideal for 1/8 & 1/10 Scale On road, off road, Truck, Boat, Airplane, Helicopter, Robot and engine etc.

Programmable ( required Powerhobby USB ) 

Specification
Operating Voltage: 4.8-8.4 V
Operating speed: 0.09sec/60° @ 6.0V
Operating speed: 0.08sec/60° @ 7.4V
Operating speed: 0.07sec/60° @ 8.4V
Stall Torque: 28 kg-cm (350 oz-in) @ 6.0V
Stall Torque: 31 kg-cm (400 oz-in) @ 7.4V
Stall Torque: 35 kg-cm (430 oz-in) @ 8.4V
Gear: Steel
Motor: BLS
Size: 40*20*37.2mm (1.57 x 0.78 x 1.46 in)
Weight: 83g
Connector Wire: TYU 300 mm