This is an M18 cordless Force Logic knockout tool from the Milwaukee brand. Designed to create a force of 6t, the knockout tool has a voltage rating of 18V and weighs 4.3 pounds. It measures 2.31 x 4.49 inches, and is capable of punching 4 inch wide holes in 14 gauge mild steel. Easy and quick to align, the knockout tool runs off a lithium ion battery, is compact and designed for handheld work.