X20-7512 Rated Voltage DC7.4V Voltage Range DC6.0V-8.4V Torque 65kg.cm@6.0V 75kg.cm@7.4V 82kg.cm@8.4V Speed 0.14sec/60°@6.0V 0.12sec/60°@7.4V 0.11sec/60°@8.4V Working Frequency 1520us/333Hz Motor Type 4 Pole Brushless DC Motor ...