Description of product: With power provided by a rechargeable 12-volt lithium-ion battery, the Craftsman Hammerhead Auto Hammer reportedly drives nails up to 31/2 inches long at the rate of 3,600 impacts per minute with the press of a trigger. Its compact design and light weight (less than 2 pounds) makes the Auto Hammer ideal for areas where swinging is restricted and for overhead applications. Features include: (1) retractable nail sleeve that covers impact mechanism and retracts during use to ensure flush finishes, (2) magnetic head that holds nails up to 7/16 inch wide, (3) soft-grip handle for increased comfort and grip, and (4) LED work light that illuminates the work area. It comes with battery, battery charger, nail remover, and storage/carrying case.