1pcs Original Power HD B2 35kg 7.4V Brushless Digital Servo with Metal Gears and Double Bearings.

Torque(6.0V): 30.0 kg-cm (416.6 oz/in)
Torque(7.4V): 35.0 kg-cm (486.0 oz/in)
Speed: 0.16 sec (6.0V) │ 0.14 sec (7.4V)
Operating Voltage：6.0 ~ 7.4 DC Volts
Weight: 70.0 g (2.46 oz)
Bearing Type：Ball Bearing x 2
Motor Type：Brushless Motor
Gear Type：Titanium & Steel
Operating Temperature：-20C~60C
Working frequence：1520μs / 333hz
Size：40.7 x 20.5 x 38.5 mm ( 1.6 x 0.80 x 1.51 in)