The Milwaukee M18 Fuel 3/8" Mid-Torque Impact Wrench with Friction Ring (2852-20) is the most powerful 3/8" Impact wrench in the industry. The PowerState brushless motor delivers up to 0- 2,300 RPM resulting in increased productivity. RedLink Plus intelligences prevents damage to the tool and battery due to overloading or overheating, and its compact length allows for more access to tight spaces. The durable anvil design lasts longer than competitive 3/8" impact wrenches. The 3-mode drive control provides greater control over output speed and power with a max RPM of 2,300. This impact wrench also features a premium rubber overmold that withstands corrosive materials and provides increased comfort when in use. Compatible with RedLithium batteries (not included).