Full CNC machined alloy case - High Voltage 6.0 - 8.4V - Titanium gears - Ball Raced - Coreless motor - Ultra high speed and torque - Water resistant Specifications: Servo Technology: Digital Ultra High Voltage Input Voltage (V): 6.0V - 8.4V Servo Type / Size: Standard Length (mm): 40.5 mm Gear Material: Titanium Gears Width (mm): 20.5 mm Ball Beared: Ball Beared Motor Type: Coreless Motor Height (mm): 36.0 mm Servo Case: CNC Alloy Servo Power - Torque Kg/cm: 16 - 25 Kg/cm Servo Speed 60/sec: 0.05 - 0.10 Sec/60 Protection: Waterproof Weight (g): 72 g Speed 60/Sec @ 6.0V: 0.07 Sec/60 Speed 60/Sec @ 7.4V: 0.06 Sec/60 Speed 60/Sec @ 8.4V: 0.05 Sec/60 Torque kg/cm @ 6.0V: 11.8 Kg/cm Torque kg/cm @ 7.4V: 14.4 Kg/cm Torque kg/cm @ 8.4V: 16.5 Kg/cm Connector type: JR Spline size: 25T Spline Thermal Protection Temperature: Waterproof Water Protection: Waterproof