Top of the range titanium geared high voltage servo with coreless motor and half aluminium case. Torque: 28.5kg-cm at 6.0V / 30.6kg-cm at 7.4V Speed: 0.16s/ 60 at 6.0V / 0.15s/ 60 at 7.4V Weight: 63g Bearing type: 2 ball bearings Motor type: Coreless motor Gear type: Titanium alloy gear Dimension (mm): 40*20*38 Operating Voltage: 6.0~7.4V Working Frequency: 1520 / 333hz Feature: Half aluminum case