M18 Fuel™ with One-Key™ Compact Impact Wrench with Friction Ring (Tool Only), 18 V, 1/2" SocketPOWERSTATE brushless motor delivers fastening torque REDLINK PLUS intelligence prevents damage to the tool and battery due to overloading or overheating REDLITHIUM batteries deliver more work per charge and more work over the life of the battery ONE KEY compatible; customize, track and manage tool's performance and location Easily toggle between up to four custom performance profiles that can be saved to the memory of the tool Includes: (1) M18 FUEL