Twin Tab Single Tab CF Keel Black $149.95 Single Tab single-tab CF Keel Black - Single Tab Single Tab twin-tab CF Keel Black - Twin Tab Twin Tab BLACK / L $149.95 Add to cart PRODUCT DETAILS The CF Keel is a house made design that blends a balanced approach for retro twin trimming. The wider base and lightly swept outline creates hold, drive and makes for fast, smooth arcs on an open face. Maneuverability: Responsive Balanced Drive Drive fin, perfect for any retro twin. Compatibility: Compatible with Futures fin system. Construction: Fiberglass Flex: Stiff