DS1220 High Torque Titanium Gear Standard Servo from MKS
This is the MKS DS1220 titanium gear high torque digital servo. The DS1220 is a low cost water resistant, titanium gear servo that is well suited to surface and aircraft applications, and is an excellent cyclic servo for most 600, 700, and 800 size scale RC helicopters.
Features:

Aluminum body
Titanium gears
Dual ball bearing output shaft
Created for all around use in RC model cars, airplanes and helicopters

Water and dust resistant sealed case allows servo to operate in extreme environments
Perfect size, weight, and torque cyclic servo for 600, 700, and 800 size RC helicopters

Includes:

MKS DS1220 high torque servo
2 Servo arms
2 Mounting brackets
Set of screws