Naish Stand Up Paddling Quad Bamboo 4-Fin Set 2 x 4.5" wood/ glass composite side fin for FCS fin box system 2 x 4.0" wood/ glass composite side fin for FCS fin box system 0 0 2 x 4.5" wood/ glass composite side fin for FCS fin box system and 2 x 4.0" wood/ glass composite side fin for FCS fin box system