CRAFTSMAN V20 1/2-in 20-Volt Max Variable Speed Cordless Hammer Drill (2-Batteries Included)HIGH PERFORMANCE: Produces 280 unit watts out and 25,500 BPMs for faster drilling in concrete and brick INCREASED SPEED: 2 Speed gearbox with speeds of 0 350 0 1,500 EASY BIT CHANGES: 1 2 in keyless chuck Common applications include hammer drilling in concrete and masonry Includes 1) CMCD711 Hammer Drill; (2) V20 20V MAX 1. 3Ah Lithium Ion Battery; (1) V20 20V MAX Lithium Ion Charger 20V MAX battery, maximum initial battery voltage (measured without a