Feature:1. Superior Materials: The 40KG servo is equipped with sturdy steel gears, CNC aluminum intermediate housing, and dual ball bearings.2. Superior Quality: 40KG digital servo provides high speed, quick response, unimaginable efficiency, and low power consumption.3. Waterproof Servo: 40KG digital servo has excellent waterproof performance, can adapt to different harsh environments.4. Widely Used: 40KG waterproof servo is compatible with remote control of 1/8 and 1/10 RC cars, robots and ships.5. High Rotation: 40KG servo has controllable angle range from 0 to 270 degrees, good linearity, precise control.Specification:Item Type: 40KG ServoMaterial: Aluminum Alloy, SteelProduct Color: BlueWeight: Approx. 80g / 2.8ozWorking Voltage: 4.8V~8.4VOperating Speed: 0.16 Seconds / 60 Degree(4.8V), 0.14 Seconds / 60 Degree(7.4V)Stall Torque: 36kg/cm (4.8V), 45kg/cm (7.4V)Number Of Teeth: 25TApplication: 1/10 1/8 RC Cars, Ships, Robots, Etc.Product Size: Approx. 54x46.5x20.5mm / 2.1x1.8x0.8in.Package List:1 x Servo1 x Aluminum Alloy Servo Arm 4 x Plastic Servo Arm 4 x Damping Pad 4 x Screw Cartridge 7 x Screw