M18 Fuel™ Compact Impact Wrench with Friction Ring (Tool Only), 18 V, 3/8" SocketFriction ring (hog ring) ensures quick and easy socket changes Compact length provides most access in tight spaces Powerstate brushless motor Tri LEDs deliver high definition lighting to increase workspace visibility with less shadows 4 mode Drive Control provides greater control over output speed and power Auto Shut Off control applies no more than 20 ft lbs of torque for hand tight fastening applications to prevent over tightening Bolt removal