Hitachi 18V Lithium-Ion Cordless Impact Driver: * Includes 2 1.5-Ah Lithium-Ion 18V batteries, cross-compatible charger, and case * 1280" per pound of driving torque for heavy applications like tightening carriage bolts, driving lags and sinking deck screws * Drills into wood, metal and concrete * Tightens and loosens small screws, tapping screws, bolts and nuts * Faster impact driving with a no-load speed of up to 2,600 RPM and a 3,200 BPM impact rate * Balanced tool weight for proper wrist alignment and reduced fatigue * Soft elastomer grip for improved comfort and reduced fatigue * Optimized handle dimensions for a secure grip and ergonomic comfort in all hand sizes * Model# WH18DSAL