SAVOX SW1212SG Waterproof High Torque High Voltage Coreless Digital ServoWaterproof, 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