Best used as replacement parts for a Necky Skeg Bracket (07.2778.0000). Kit comes with two rubber skeg washers (07.2849.0000). You may also need a 10-32 ny-lock nut (07.2116.0000) and a Number 10 Neoprene Bonded Washer (07.2847.0000). This assembly accepts the plastic Necky Skeg Blade found on Necky brand kayaks such as the Chatham (assumed to fit both fiberglass and poly hulls) built about 2003 and later. The stainless steel Necky Skeg Bracket (07.2778.0000) that is now discontinued. NECKSKEG
Use this link to see Necky Skeg Diagram