HS-805BB Mega Scale Ball Bearing Nylon Gear Large Servo from Hitec - HRC31805S
Known as the “monster” servo the HS-805BB uses a heavy duty nylon gear train and a strong 10mm, 15 tooth output shaft to generate 343 in-oz of torque that will easily move just about any giant scale plane you could throw at it!
Features:

Heavy duty nylon gear train
Strong 10mm, 15 tooth output shaft
Ultra 342 in-oz of giant scale-pushing torque
Dual ball bearings

Includes:

1x HS-805BB mega scale ball bearing nylon gear large servo
1x Set heavy duty horns (X, Single arm, Circle horns)
Hardware