Servo with metal gears Rotation: 60 degrees Voltage range: 4.8 6V Speed @4.8V: 0.12; @6V: 0.10 sec/60? Torque @4.8V: 1.2; @6V: 1.5 kg/cm Dimensions: 22.9 x 12 x 25.4mm Weight: 13g Assortment of servo arms included