Note: The battery and charger are not included. Specification: Nut busting torque: 520 Nm Maximum fastening torque: 350 Nm Voltage: 18V Drive shaft: 1/2 "square Idle speed: 0-4000 rpm Characteristic: Offers a variety of fastener controls for a variety of applications such as scaffolding, car tires, automotive, assembly, and manufacturing industries. 1/2 "square drive. Auto-stop mode. Reverse rotation auto-stop mode will stop impact and rotation in 0.2 seconds after the screw / nut is sufficiently loosened. LED work light. 520N.M stepless speed switch with high torque. Tungsten steel shaft, high hardness and wear resistance. Good workmanship and good performance. Easy to use. Long lifetime. Suitable for construction site shelving, maintenance, woodworking, etc. Compatible with all Makita 18V lithium ion batteries like BL1830, BL1830B, BL1840, BL1840B, BL1850, BL1850B, BL1860B etc. Delivery content: 1 x impact wrench