DEWALT DC920KA 18-Volt 1/2-Inch XRP Cordless Drill/Driver Kit Durable, high-efficiency motor provides maximum power of 510-unit-watts-out for fast, effective fastening and drilling 1/2-inch self-tightening chuck mini mazes bit slippage for improved precision Three speed settings for job-specific performance and maximum versatility Weighs just 6.3-pounds and offers an ergonomic non-slip grip for increased comfort and reduced fatigue Includes 1-hour charger, 2 18-volt NANO battery packs, 360-degree side handle, heavy-duty kit box