The HS-5086WP is the smallest in Hitec's class of waterproof servos. With heavy-duty metal gears and a ball bearing supported output shaft, the HS-5086WP is among the most durable and reliable micro servo for wet conditions. Possessing the same size as our popular HS-85MG and the industry's first IP67*rating, this spunky mini will keep your RC vehicle, boat, aircraft or robot watertight, no matter what the weather or surroundings. Features Metal Gear with MP First Gear Top Ball Bearings 3-Pole Cored Ferrite Motor Industry's First IP67-Rated Waterproof Case* IP = International Protection Code 6 = Dust Tight 7 = Immersion up to 1M Programmable Circuit Specifications Motor Type: 3 Pole Metal Brush Ferrite Magnet Bearing Type: Top Ball Bearing Speed (4.8V/6.0V): 0.18 / 0.15 Torque oz./in. (4.8V/6.0V): 42 / 50 oz-in Torque kg./cm. (4.8V/6.0V): 3.0 / 3.6 kg-cm Size in Inches: 1.22 x 0.60 x 1.22 in Size in Millimeters: 31.0 x 15.2 x 31.0 mm Weight ounces: 1.0 oz Weight grams: 28.5 g