Operating speed: 0.17sec / 60 degrees (4.8V no load) Operating speed: 0.13sec / 60 degrees (6.0V no load) Stall torque: 13 kg-cm @ 4.8 V Stall torque: 15 kg-cm @ 6 V Operating voltage: 4.8-7.2 volts Gear Type: All Metal Gears