This is a 560 HV waterproof low profile smart winch 33KG servo by Power Hobby.Features: Fast Heat Dissipation Aluminum Case Extra Strong Steel Gears Dual Ball Bearing Standard 25-Tooth Spline High Precision Magnetic Sensor Long Lifespan Brushless Motor Programmable Digital Circuit Fully Waterproof Up To IP67 Mode Selection By Changing Firmware Ideal for 1/10, 1/8 Touring Cars, Racing Cars On Road, Off Road,Truck & Airplane, 1/10 Scale Surface, Boat, Aircraft Applications Specifications: Operating Voltage: 4.8-8.4 V Operating speed: 0.090sec/60 @ 6.0V Operating speed: 0.080sec/60 @ 7.4V Operating speed: 0.065sec/60 @ 8.4V Stall Torque: 348 oz-in (25.0 kg-cm) @ 6.0V Stall Torque: 417 oz-in (30.0 kg-cm) @ 7.4V Gear: Steel Motor: BLS Size: 1.6 x 0.79 x 1.16 in. (40.8 * 20.2 * 29.5mm) Weight: 2.33 oz. (66g) Connector Wire: TYU 11.81 in. (300 mm)