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. A blade is the portion of a tool or machine with an edge that is designed to puncture, chop, slice or scrape surfaces or materials. Blades are typically made from materials that are harder than those they are to be used on. A blade may also refer to a fan blade such as that used in the movement of air or a gas. Features. Agitator Blade Assembly. Made with high quality materialSpecifications. Height 1 in / 2.54 cm. Width 11 in / 27.94 cm. Length 4.2 in / 10.67 cm