The Jeff McCallum Quad Especial is part of our Limited La Especial Collection. It's a multi-color, solid fiberglass layup. Master surfboard craftsman Jeff McCallum translated his design prowess into this medium-sized quad fin built for speed with a stiffer build. All four fins have a flat inside foil generating maximum drive down the line. Great for your retro fishes, hybrids and wide squash tail boards.