The milwaukee m18 fiwf12 fuel 12in friction ring impact wrench offers 4 modes of operation thanks to its unique milwaukee drive control which allows the user to shift into four different speed and torque settings to maximise application versatility the 4 modes are mode 1 for precision work mode 2 helps prevent damage to fasteners and material mode 3 delivers maximum performance for the toughest applications mode 4 intelligently detects when the tool has impacted on a fastener for one second