HXT12K (MG995) 12kg Metal Gear Twin Bearing Servo

This is an excellent servo, it is sold in other countries under many different names.

Below are the specs I got from the manufacturer
MG945 SPECIFICATIONS
Size: 40.6mm*19.8mm*37.8mm
Weight: 49.2gr
Speed: .26sec (6V)
Torque: 12Kg/cm (6V)
Voltage: 4.8V~7.2V