This kit includes four aluminum anodes for rudder and trim tab protection, along with the necessary fasteners for installation. The anodes are designed for use in saltwater environments and are compatible with boats that require zinc anodes. The manufacturer of the anodes is unknown, but they are branded as Performance Metals Products. The kit is categorized as Complete Gas Engines, Inboard Engines & Components, Boat Parts, and Parts & Accessories on eBay Motors. It is important to note that the condition of the anodes is not mentioned in this description.