This magnesium Seachoice Mercury Alpha One Gen I Anode Kit provides a Mercury Alpha One Gen I outboard with excellent corrosion protection and is designed for use in fresh water. These cadmium-free and environmentally-friendly components conform to Mil-Spec A-21412(SH). Components included in the kit are a block anode for the gimbal housing, a skeg for the ventilation plate, two nuts for the stern drive, and 18 of the 8/304 Stainless Steel screws for sure installation. Seachoice is committed to delivering quality marine accessories and OEM replacement parts to satisfy fishing, boating and watersports enthusiasts worldwide. Seachoice is run for and by boaters, offering a wide-ranging product line while remaining affordable.