A quad set built for speed. It's based on a keel split into two fins, which keeps the same surface area and adds control. Radio Fins are master designs by Allan Gibbons for Mollusk, and they fit Futures fin boxes. Futures fin box compatible Front fins: 4.5" height, 4.4" base, 8° cant, flat foil Rear fins: 3.7" height, 3.7" base, 6° cant, 80/20 foil