English:
This Low Profile Servo from Power HD with the name R12 is great value for money. Great spec for a great price and suitable for use in TC and off-road applications. 

Features:
Torque(6.0V): 9.0 kg-cm (125.0 oz/in) 
Torque(7.4V): 12.0 kg-cm (166.6 oz/in)
Speed: 0.07 sec (6.0V) ¦ 0.06 sec (7.4V)
Operating Voltage:6.0 ~ 8.4 DC Volts
Weight: 41.0 g (1.45 oz)
Bearing Type:Ball Bearing x 2
Motor Type:Coreless Motor
Gear Type:Aluminum
Operating Temperature:-20?~60?
Working Frequence:1520µs / 333hz
Size:41.0 x 20.0 x 26.4 mm ( 1.61 x 0.79 x 1.04 in)
Servo Spline: 25