TYPE A Fins (3-hole 4mm screw thread). These fins will fit any OBRIEN 2010 & newer model wakeboard as well as the 2011 & newer Nalu Surfboards. Will fit any 2009 wakeboard except System. Will fit any 2008 wakeboard except System. Will fit any 2007 wakeboard except System, Fluent. Will fit all 2006 wakeboards except Diesel, Edge, Myth. Will fit these 2005 boards: Player, Demented, Valhalla, Vision. Will not fit anything 2004 & earlier.

Comes with 2 fins.