CAPTAIN FIN Future Fins McCallum Keel Fin These are large keel fins, providing drive, but the angled design relative to the fin box (photo 15) also allows for good maneuverability. - Brand: CAPTAIN FIN CO. - Color: Purple - Type: Surfboard Fin - Size: Large - Design: Single Fin Please purchase only if you understand that this item has been stored, inspected, photographed, and packaged by a non-professional. This is a used item inspected by a non-professional. There may be damage that cannot be identified by a non-professional, and there is no guarantee of performance during use. Please purchase a new item if you are concerned. Thank you for viewing.