The Craftsman NEXTEC™ HAMMERHEAD™ Auto-Hammer is designed for do-it-yourselfers and contractors. It eliminates the traditional swinging motions required to drive nails, preventing potential miss-hits and consequential injuries. Its compact, lightweight design with retractable magnetic sleeve allows for use in tight spaces or overhead. It is powered by a 12-volt lithium-ion battery, eliminating the need for a compressor, hose, fuel cell or oil.