PowerHD B7rs Silver HV Brushless Digital Servo 13.0KG/0.055sec@7.4V

Torque(6.0V): 10.0 kg-cm (138.8 oz/in)
Torque(7.4V): 13.0 kg-cm (180.5 oz/in)
Speed: 0.065 sec (6.0V) ¦ 0.055 sec (7.4V)
Operating Voltage: 6.0 ~ 8.4 DC Volts
Weight: 48.0 g (1.69 oz)
Bearing Type: Ball Bearing x 2
Motor Type: Brushless Motor
Gear Type: Titanium & Steel
Operating Temperature: -20~60°C
Working frequency: 1520µs / 333hz
Size: 41.0 x 20.0 x 26.4 mm ( 1.61 x 0.79 x 1.04 in)