Description:
XQ-4220 Metal gear Digital Coreless servo

Specifications:

• Torque:
  • 243 oz/in at 9.6V (17.5kg/cm)
  • 286 oz/in at 11.1V (20.6kg/cm)
     
• Speed:
  • .13 sec at 9.6V
  • .11 sec at 11.1V
     
• Voltage: 9.6 - 11.1V
• Weight: 1.46oz (56g)
• Size: 40x20x39mm
   
• Gear Style: Futaba Arms
• Gear Type: Metal - Titanium

Don't forget to buy some circle servo arms to fit your carbon fiber arms you got in your kit!