High Torque, Steel Gear Rudder Servo HS-7956SHR Speed (6.0v/7.4v) 0.15/0.12 at 60 Torque (6.0v/7.4v) 277.74 oz-in (20kg-cm) / 340.24 oz-in (24.5kg-cm) Coreless motor / dual ball bearings Dimensions: 1.57" x 0.79" x 1.45" (40 x 20 x 37mm) / weight: 2.40 oz (68g) Durable steel gears / 24 tooth standard spline