Features and Benefits:BL™ Brushless Motor delivers 120 ft.lbs. of Max Torque and 210 ft.lbs. of Nut-Busting Torque;Variable 2-speed (0-1,300/0-2,400 RPM & 0-2,000/0-3,600 IPM) for a wide range of fastening applications;Reverse Rotation Auto-Stop Mode stops rotation and impact when fastener is loosened adequately;Ultra-compact design at only 5-5/8";Weighs only 2.2 lbs. with battery for reduced operator fatigue (battery not included);Built-in L.E.D. light illuminates the work area;Ergonomically designed handle with rubberized soft grip provides increased comfort;Ideal for working in tight spaces and overhead applications;Convenient 3/8" square drive for quick socket changes;Makita's proprietary hammer and anvil are made using the highest quality steel and heat hardened to last longer;The Makita® 12V max CXT® Cordless 3/8” Sq. Drive Impact Wrench, Tool Only (WT05Z) delivers power and speed in a compact size for efficient fastening. It is an ideal solution for working in tight spaces and overhead applications. The 12V max CXT® 3/8” Sq. Drive Impact Wrench weighs only 2.2 lbs. (with 2.0Ah battery, sold separately), with variable speed (0-2,400 RPM & 0-3,600 IPM) and 120 ft.lbs. of Max Torque. Makita�s entire line-up of impact drivers and impact wrenches including the WT05Z is engineered with a proprietary hammer and anvil impact mechanism that is manufactured using the best raw materials with the highest quality steel, as well as a unique heat-hardening process for maximum fastening and driving power. With Makita 12V max CXT® Lithium-Ion slide-style batteries (sold separately), users get superior balance and ergonomics over pod-style batteries. For longer run time, 12V max CXT® cordless tools are also compatible with the 12V max CXT® Lithium-Ion 4.0Ah battery (BL1041B). 12V max CXT® Lithium-Ion batteries are engineered with a Battery Protection Circuit that protects against overloading, over-discharging and over-heating. It�s part of the expanding 12V max CXT® series, combining performance with superior ergonomics in a compact size.