The Milwaukee M18 FUEL 3/8 in compact impact wrench w/friction ring is the most compact in its class, delivering the most access in tight spaces, up to 250 ft-lb of nut-busting torque and maximum workspace visibility. The Milwaukee cordless impact wrench measures only 4.8 in L with a POWERSTATE brushless motor to provide the power to remove stubborn fasteners, even in confined spaces. The Milwaukee 3/8 in impact wrench has tri-LEDs that surround the anvil to deliver brighter light with fewer shadows. 4-mode DRIVE CONTROL offers greater precision with a range of pre-set rpm and IPM levels, selectable from a single button on the tool. By selecting mode- 4, AUTO SHUT-OFF control applies no more than 20 ft-lb of torque for hand-tight fastening applications to prevent overtightening. Mode-4 also features bolt removal control delivers full torque output, then decreases RPMs once the bolt is loosened to prevent fastener drops. REDLINK PLUS intelligence electronics make these controls possible while ensuring maximum performance, protecting the tool against overloads, over-heating and over-discharge. The M18 REDLITHIUM battery pack (not included) fits M18 tools, delivering more work per charge and more work over the life of the pack.