Remote Control Analog Servo with Metal Gear HD-9001MG Servos: 
Torque(4.8V): 8.6 kg-cm (119.4 oz/in) 
Torque(6.0V): 9.8 kg-cm (136.1 oz/in) 
Speed: 0.16 sec (4.8V) / 0.14 sec (6.0V) 
Operating Voltage:4.8 ~ 6.0 DC Volts 
Weight: 56.0 g (1.98 oz) 
Bearing Type: Ball Bearing x 2 
Motor Type: DC Motor 
Gear Type: Copper 
Operating Temperature:-20~60 Celsius degree 
Working frequence:1520μs / 50hz 
Size:40.7 x 20.5 x 39.5 mm ( 1.60 x 0.81 x 1.56 in)