The Dewalt DCD959KX 18-volt cordless hammerdrill/drill/driver is a powerful, super-versatile tool capable of drilling holes and driving screws in virtually any building material you're likely to encounter: wood, plywood, and composites, plastic, metal, steel and even poured concrete, stone and concrete block. It's driven by an 18-volt XRP extended-run battery, which produces an impressive 420 unit watts out of power. And with three operating speeds (low: 0-450 RPM, medium: 0-2,000 RPM, and high: 0-1,800 RPM), you can work fast and efficiently. When switched to the hammerdrill mode for masonry work, the variable-speed tool combines bit rotation and concussive blows to produce: 0-7,650 blows per minute (BPM) on low, 0-24,650 BPM on medium, and 0-34,000 BPM on high. Other features include: traditional pistol-grip design; 360-degree rotating side handle; 22 slip-clutch settings for precise screw driving; patented all-metal transmission for smooth operation and improved run time; and heavy-duty, -1/2-inch ratcheting chuck that prevents bit slippage. The DCD959KX is an invaluable asset at the jobsite or in the workshop. It comes with two 18-volt XRP NiCad batteries, one-hour charger, rotating side handle and storage case. It's backed by Dewalt's three-year limited warranty, 90-day money-back guarantee, and one-year free service contract. For a limited time get a FREE DC9096 Battery Pack with purchase.