... MonitorReduction Ratio 1:10,1:20,1:30, 1:50, 1:63,1:100,1:150, 1:210 1:250,1:298,1:380,1:1000Specification: ... ModelReduction RatioVoltageNo LoadAt Maximum EfficiencyStallSpeedCurrentSpeedCurrentTorqueOutputTorqueCurrent Vr/minAr/minAKg.cmWKg.cmAN20AGB1000-091681/10006210.06190.131.00.305.50 ... me if any more question. 6v 1:1000 ratio 5.5kg.cm high stall ...