Single Tab Twin Tab CF Keel Black $104.97 Twin Tab twin-tab CF Keel Black - Twin Tab Twin Tab single-tab CF Keel Black - Single Tab Single Tab BLACK / L $104.97 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 FCS, FCS II, Captain Fin Snap-In fin systems (Grub Screws not included). Construction: Fiberglass Flex: Stiff