The M18 FUEL™ ¼” Impact Driver with ONE-KEY™ is the fastest; most compact, and most powerful tool in its class. The POWERSTATE™ brushless motor produces up to 2,000in-lbs of torque, delivering up to 30% faster driving speed, increasing the impact drill's productivity for the most demanding fasteners on the job. At only 4.59” in length, this compact impact driver gives you better access in tight spaces. .  With ONE-KEY™, you gain the ability to Customize, Track and Manage your hex impact driver. ONE-KEY™ technology also allows you to save up to 4 task settings directly to the tool. Self-tapping screw mode provides faster installation time, shutting the hex driver down as soon as the fastener is seated to reduce damage to fasteners and materials. If your tool is ever lost or stolen, its tracking functionality can lock it out to protect your investment.