Kit On the Go: Included 11 pcs CR-V steel impact socket set, 9,10,11,13,14,17,19,21,24,27 mm and 5" Extension bar, made of high hardness CR-V steel to withstand torque changes; A carrying case simplifies storage and provides greater portability. Easy Torque Control: This 1/2 inch impact wrench uses a 4-position combined forward/reverse and power management regulator, allowing you to switch between working modes and adjust torque output to handle any auto repair tasks. Super Easy Lubrication: Most problems of air tools are caused by forgetting to lubricate the tool. With VEVOR's lubrication adaptor, you no longer worry about forgetting to oil tools, greatly extending the service life of impact wrench. Lightweight Design: Weighing only 4.6 pounds, this impact gun is compact and lightweight; it offers the top-in-class power-to-weight ratio and minimizes hand fatigue, so you can work more comfortably and faster. High Performance: VEVOR air impact wrench features a twin hammer impact mechanism, delivering up to 1,400 foot-pounds of nut busting torque, tackles assembly and disassembly applications, auto repairs and maintenance with exceptional performance and control.