saruSURF 4.6" flex fin for airSUP and other surfboards SUP Yellow

saruSURF 4.6" inch fin for Surfboards, SUP, paddle boards and airSUP. OPTIONAL Fin screw: air7 Titanium or Stainless Steel Fin Screw is a Titanium longboard / SUP center fin screw that removes the need for screwdrivers. Fin screws like this have been around since the 1970's So easy to use, simply tighten your fin by hand. This allows you to adjust your fin anywhere, anytime including while out in the surf! fits all longboard and SUP center fin box (aka : US fin box, unlimited box, skeg box)