Commonly referred to as Dog Ears, these Agitator Directional Cogs are manufacturer approved replacement parts for various Whirlpool, Kenmore, KitchenAid, Roper, Estate, Inglis, Crosley, and Maytag Washers and Dryers. To ensure these are compatible with your machine, please see the "Model Cross Reference List" below. The Agitator Directional Cogs ratchet across the gear teeth in one direction and dig into the gear teeth in the other direction to create the needed agitation. If your machine makes unusual noises, shakes/moves while operating, or will not spin or drain properly, it may be time to replace them. Each Cog is approximately 1" long, made of plastic, and sold in a pack of 4.