As part of the Ryobi 18V ONE+ system of over 200 cordless tools for the home, garden, automotive, crafting and much more, the Ryobi 18V ONE+™ R18IW3-0 3-Speed Cordless Impact Wrench Bare tool is perfect for fastening and loosening heavy duty fasteners. This product is a 'bare' tool (without battery or charger) which is a great value way to expand your ONE+ collection. All ONE+ batteries and chargers are compatible with all ONE+ tools. The Ryobi R18IW3-0 ONE+ 18V Impact Wrench has a 1/2in square drive with locking pin for easy socket fitment. Its high power motor delivers up to 400Nm of torque, ideal for fast tightening/removing of heavy duty fasteners. The impact mechanism allows for high amounts of torque with little vibration feedback through the handle. It has 3 speed settings that provide added control and versatility: Mode 1 for precision work, Mode 2 for increased speed, and Mode 3 for maximum torque.