The Stanley FatMax V20 cordless system is based around the V20 18v lithium ion battery pack. These batteries are fully compatible with all power tools and outdoor products in the V20 range, meaning that a single battery and charger can be used for a multitiude of different tasks. This FatMax V20 brushless impact wrench has a male 3/8" square drive anvil which is designed for direct connection of 3/8" drive impact sockets. The brushless motor is powerful and energy efficient, for longer runtimes and increased performance, but also compact - meaning that the tool has a much shorter body length than many conventional brushed impact wrenches. The tool has forward and reverse settings for tightening fasteners or breaking them loose, and the powerful impact mechanism means that even rusted, corroded or severely stuck nuts and bolts can be loosened for removal. To assist with locating the fastener in recessed holes or cramped, dark environments, there is an LED worklight which illuminates the work area as soon as the trigger is pulled. Features and Benefits Part of the Stanley FatMax V20 cordless system Runs on any Stanley FatMax V20 battery Suitable for use with 3/8" impact sockets Also comptible with other accessories when used with an appropriate adaptor Powerful impact mechanism: ideal for breaking loose stuck fasteners Powerful and energy efficient brushless motor Short body length fits more easily into tight spaces Forward and reverse settings Integrated LED worklight Ergonomic softgrip handle Specifications Battery Voltage: 18v Battery Type: Stanley FatMax V20 (lithium ion) Motor: Brushless Square Drive: 3/8" Contents Stanley FatMax V20 18v Cordless 3/8" Impact Wrench (bare tool) No Battery No Charger No Case.