520N. M high torque, smooth variable speed switch. Powerful electric wrench, versatile and super powerful. Tungsten steel shaft, high hardness and wear resistance. Suitable for construction sites, maintenance, wood processing, etc. D Brushless motors do not generate during operation and do not wear out. Voltage: 18 volt No Load Speed: 0 - 4200 rpm Impact frequency: 0 - 3800 ipm Maximum Torque: 520N. M Square Drive:1/2inch Plug Type: US Plug, it applies to Canada, India, Mexico, Thailand, Taiwan, the , the Philippines and so on. Colour:black+blue Material:plastic+metal Voltage: AC100-240V type: 2Battery Package Contents: 1 x Electric Wrench 2 x Battery 1 x Charger Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.