Hi- Tec Sail Winch Servo . The HS-785HB sail winch servo with its large drum wheel has 3 1/2 revolutions of travel for hauling in even the largest of sails. With its dual ball bearing supported output shaft the HS-785HB will provide years of reliable service. Specifications Motor Type: 3 Pole Bearing Type: Dual Ball Bearing Speed (4.8V/6.0V): 1.68 / 1.38 Torque oz./in. (4.8V/6.0V): 153 / 183 Torque kg./cm. (4.8V/6.0V): 11.0 / 13.2 Size in Inches: 2.32 x 1.14 x 1.96 Size in Millimeters: 58.93 x 28.96 x 49.78 Weight ounces: 3.88 Weight grams: 110