Hitec RCD 31077S HS-77BB Low Profile BB Servo

From the Manufacturer Product Description With its low profile design and strong standing torque, the HS-77BB is a great choice for wing or tail mounting in aircrafts up to 1.20 size. Submarines, boats, cars and trucks can also benefit from this servo's strength and compact size. Specifications Motor Type: 3 Pole Bearing Type: Top Ball Bearing Speed (4.8V/6.0V): 0.18/0.14 sec @ 60 deg. Torque oz./in. (4.8V/6.0V): 61/76 Torque kg./cm. (4.8V/6.0V): 4.4/5.5 Size in Inches: 1.73x0.90x0.98 Size in Millimeters: 43.94x22.86x24.89 Weight ounces: 1.23 Weight grams: 34.87.