Savox SW-1212SG HIGH VOLTAGE 7.4V / 0.14 sec Coreless Digital Servo

Waterproof, High Torque, High Voltage Coreless Digital Servo, 0.14 sec / 638oz @ 7.4V
This waterproof, steel-geared servo is perfect for Monster Truck and most Scaler and Crawler applications where a slightly taller servo can be fitted. Precision steel gears, stump-pulling torque, and waterproof to IP67 standards (operates for up to 30 minutes in water up to 3 feet deep).

Features:

Center aluminum with nylon composite top and bottom case
Operates directly on 7.4v without the need for an external BEC
Precision ball bearings
Specifications:

Torque @ 7.4v - 46.0 kg/638 oz-in
Speed @ 7.4v - 0.14 sec/60 deg
Weight: 83g / 3.27oz
Dimensions L x W x H mm: 40.6 x 20.7 x 46.1