The Hobie Thru Hull Plug is a replacement plug that allows you to thread wires through the hull of your boat to install fish finders, GPS and more. One plug, nut, and O-ring is included. Allows you to thread wires through the hull of your boat, Includes: Plug, nut and O-ring, Sold individually, Model Year: 2019, Product ID: 430217, Model Number: 86505611, GTIN: 0792176167129