Features:High Speed Brushless Servo WinchSubmarine Waterproof: 6 Point SealsInternal Machined Spool with Coated FinishCNC Aluminum CasingInternal: Steel Gears / Brass Casing, Ultra FinishSpecifications:Voltage 4.8V - 8.4V(LWH) : 1.6 x .79 x 1.16 / 40.8x20.2x29.5mmTorque: 192oz @ 6v/ 250oz @7.4v/ 300oz @8.4vSpeed: .05sec @6v/.04sec @7.4v/.03sec @8.4vBearing Type: 3 Ball Bearings / Weight: 4.33oz / 123G