Rotary hammers have two pistons – a drive piston, and a flying piston. An electric motor turns a crank, which moves the drive piston back and forth in a cylinder.
Air compressors are generally faster, lighter and more powerful than traditional power tools. The key to choosing the right air compressor is to match the unit to your job demands.
A random orbital sander (also known as a palm sander) is a hand-held power tool which sands in a random-orbit action. That is, in constant irregular overlapping circles.
These kits collect two or more commonly used cordless tools in one package that includes the tools, a battery, a charger, and often a carrying case or bag.