Perfect for scale crawlers, 1/8 1/10 monster truck, 1/8 1/10 2WD and 4WD buggies, as well as 1/8 scale buggies and trucks. In addition, this servo is great choice for boats and other application which require high power, high voltage and waterproof. Waterproof IP67 level up to 1 meter which allow driving in the rain, puddles, snow and mud. High reliable and durable patent gear design. Full aluminun CNC case for fast heat disppation. High precision digital control circuitry. Features: High performance standard digital servo Built-in magnetic sensor Waterproof IP67 High precision steel gear High efficiency bruhless motor High strength 3 ball bearings Full CNC Aluminium hulls and structure Ideal for 1/10, 1/8 on road, off road, truck/cars Specs: Operating Voltage: 4.8-8.4 V Operating speed: 0.14 sec/60° @ 6.0V Operating speed: 0.12.5 sec/60° @ 7.4V Operating speed: 0.11 sec/60° @ 8.4V Stall Torque: 40kg - 555 oz-in @ 6.0V Stall Torque: 49kg - 680 oz-in @ 7.4V Stall Torque: 55kg - 760 oz-in @ 8.4V Gear: Steel Motor: Brushless Size: 40*20*41.5mm (1.57 x 0.78 x 1.63 in) Weight: 89g Connector Wire: JR 300 mm Spline: 25T