ITEM NAME:8 Inch Standard Center Fin Box Surfing Single Fins Box for Longboard Surfboard Description: 8 Inch Longboard Surfboard Center Single Fin Box. Superior nylon plastic materials so that can bear water pressure and UV. Size (LxWxH): 20.1x2.8x2.8cm / 7.9x1.1x1.1 inch Package Includes: 1 Piece Fin Box SKU: ALU0035564454025472.1 Piece Fin Box. Superior nylon plastic materials so that can bear water pressure and UV.