Hitec HS645 MG High Torque Servo

Hitec HS-645MG Ultra Torque servo, metal gears.
 
Spec:
- Operating Speed: 0.24 sec/60 degree at 4.8V
- Output Torque: 107 oz/in at 4.8V
- Weight: 1.9 oz
- Size: 41 x 20 x 38mm
Features:
- 3 metal gears 
- Dual ball bearing
- 4 adjustable splined horns
 
Detail Spec & Features check at Hitec official web site.