Everyone knows that sawzalls can cut through almost any material: wood, nail-embedded wood, plaster, metal, (steel, cast iron, aluminum, black pipe, conduit, etc.) drywall, plaster,... you get the idea. When I used this to cut through floorboards and 2x4's it was as smooth as a hot knife through butter. Unistrut and allthread were also no match for this machine.  This sawzall also has the new Quik-Lok blade clamp which allows you to change blades in seconds rather than minutes. There's no more searching for a hex wrench to change blades here.