Tower Pro MG90 metal gear with bearingWeight : 14gDimension : 23x12x29mmStall torque : 2.2kg/cm(4.8V )2.5kg/cm(6V)Operating speed : 0.11sec/60degree(4.8v), 0.10sec/60degree(6v)Operating voltage : 4.8-6.0VDead band width : 10us Cable : 26Cm