FCS Q-5XC IFT Glass Flex Surfboard Quad Fin Set Color - White w/ Blue logo This set contains 4 fins Front Fin Stats: Base - 4.37" , 111.0mm; Depth - 4.55" , 115.0mm; Area - 14.76 sq. in. , 9525mm2; Sweep - 33.0 Rear Fin Stats: Base - 3.86" , 98.0mm; Depth - 3.93" , 100.0mm; Area - 11.07 sq. in. , 7140mm2; Sweep - 33.2