These fins are/were $196-225 new and are no longer made. Arguably the best split keel quad fins ever made, the performance out of these fins is absolutely outstanding, and the build quality is as good as it gets. For grovelers, fishes, and even more performance boards, these quads rip in basically anything. Selling for less than even half of anywhere else you would have been able to find them, this is a steal for these fins!! The FCS II Lost MB PG Split Keel Quad Fin Set adds bite and control to hybrid boards with wide tails, without sacrificing pivoting capabilities. Overview: Matt 'Mayhem' Biolos's specialty quad fin set. High area quad keel set adds bite and control to hybrid boards with wide tails, without sacrificing pivoting capabilities. Board Types: Designed to fit the FCS II Fin System. Recommended for all board types including modern fish and hybrid models with moderate-to-low rocker. The Brand New Lost Mayhem FCS 2 Split Keel Quad Surfboard Fins Fish Groveler in Smoke is a high-quality set of surfing fins designed for water sports enthusiasts. Made by FCS, a reputable brand in the surfing industry, these fins offer a split keel design for added stability and control. Whether you're a beginner or a seasoned surfer, these fish groveler fins will enhance your overall surfing experience with their reliable performance and sleek design. Whether catching your first waves or performing advanced tricks, these fins will help you make the most of your time on the water.