An agitator is a device or mechanism used to put something into motion by shaking or stirring. In general, agitators usually consist of an impeller and a shaft. An impeller is a rotor located within a tube or conduit attached to the shaft. Agitators are used to mix liquids or products together or to prevent congealing. An assembly is set of manufactured parts or components that work together in unison as one mechanism or device. A shaft is a rotating machine element, usually circular in cross section, which is used to transmit power from one part to another, or from a machine which produces power to a machine which absorbs power. The various members such as pulleys and gears are mounted on it. Generally, a shield is a protective plate or screen on machinery or equipment. There are various types of shields used in restaurant equipment from screw and bolt shields, splash shields, splatter shields, heat shields, burner shields, radiation shields, sneeze guards, frost shields, lamp and bulb shields, drip shields, and many others. Specifications. Height 1.2 in.. Width 12.15 in.. Length 1.35 in.