Reciprocating saws are the thugs of the demolition world, with powerful motors and strong blades that slice through wood, PVC and metal. But they're unwieldy brutes, requiring two hands and lots of space to cut safely. Milwaukee's scrappy little Hackzall, however, is easy to command with a single hand and maneuver in tight spaces. Its 12-volt motor drives the blade at 3,000 strokes per minute—nearly as fast as a full-size saw, so it can do about as much damage.