Power take-offs (PTOs) are extensions of a vehicle's drive train that can be engaged to power auxiliary equipment such as plows, augers, winches, and many other material handling, construction, and agricultural implements

Gearboxes and gearheads are speed reducers that consist of a set of gears, shafts, and bearings in an enclosed housing.

Variable transmissions are used in industrial applications to alter the speed of an output shaft.

Engines and components are used to convert energy into mechanical force and motion for automotive and industrial applications.