20 V MAX Li-ion Cordless motor that delivers superior performance and maximum run time. The right angle attachment is for tight spaces, and it works with all three other adapters. The offset angle attachment delivers precise screwdriving close to edges. All-Metal Gear Case and Chuck: Provide maximum impact and shock durability. This allows you to remove even the most stubborn bolts and fasteners. Our cordless impact wrench  tool technology to help you get the job done. 4-Mode Drive Control provides you with unmatched control in various fastening applications Modes 1-3 gives you precision and control for any application.