Moving from hand and power tools to air tools is a big step for any home mechanic. They’re expensive—especially the better brands—but never having to fight with a lug nut or rusted fastener makes it ...

One final difference: Hammer drills and standard drills use a chuck that can accept a variety of bits, but an impact driver will only work with 1/4-inch hex-shaped bits.

Air hammers, or “air-chisels,” might not be the most common power tool you think of, but these powerful little machines put a tremendous amount of power in the palm of your hand. Think of them as mini ...