Working frequency: 1520us / 333hz applicable to: model car climbing car robot (steel gear) working voltage: dc6v-8.4v speed and torque: 40 kg.cm 6.0V 0.20sec/60° 46 kg.cm 7.4V 0.17sec/60° 50 kg.cm 8.4v 0.15sec/60 ° outer diameter size: 40.3 * 20.1 * 38.7mm weight: 88g motor size: 17 * 22mm hollow cup motor