This is Power HD M8 Low-Profile Brushless High Voltage Servo For 1/12 RC Pan Car. 

Feature:

For: 1/12 RC Pan Car

Material: Aluminum

Color: Black

Specification:

Torque(4.8V): 4.3 kg-cm (59.7 oz/in)

Torque(6.0V): 6.3 kg-cm (87.5 oz/in)

Torque(7.4V): 7.6 kg-cm (105.5 oz/in)

Torque(8.4V): 8.5 kg-cm (118.0 oz/in)

Speed: 0.10 sec (4.8V) │ 0.079 sec (6.0V)

Speed: 0.068 sec (7.4V) │ 0.058 sec (8.4V)

Operating Voltage: 4.8 ~ 8.4 DC Volts

Weight: 28.6 g (1.0 oz)

Motor Type: Coreless Motor

Gear Type: Titanium & Steel

Operating Temperature: -20℃~60℃

Working frequence: 1520μs / 333hz

Size: 28.5 x 13.4 x 29.0 mm (1.12 x 0.53 x 1.14 in)

Include:

Power HD M8 Low-Profile Brushless High Voltage Servo (1 pc)