Power Tools: ​A power tool is a tool that is actuated by an additional power source and mechanism other than the solely manual labor used with hand tools. The most common types of power tools use electric motors. Internal combustion engines and compressed air are also commonly used. Other power sources include steam engines, direct burning of fuels and propellants, such as in powder-actuated tools, or even natural power sources such as wind or moving water. Tools directly driven by animal power are not generally considered power tools.

Wall Chasers: A wall chaser is a specialized power tool used for cutting narrow grooves in walls, for instance when laying electrical cable. The tool is usually powered by an electric motor which drives a pair of abrasive discs like those found in an angle grinder, positioned closely together.

Grinder Machines: A grinding machine, often shortened to grinder, is one of power tools or machine tools used for grinding, it is a type of machining using an abrasive wheel as the cutting tool. Each grain of abrasive on the wheel’s surface cuts a small chip from the workpiece via shear deformation.