FCSII 5 Degrees Right Ding Repair Kit - Black Tab Surfboard Repair for FCSII Fin Boxes | Perfect for Surfers & DIY Enthusiasts

Replacement fin box for FCS II fin system.

FCS II fin plugs come with the following cant (angle in degrees the fin leans out) options built in to them:
0o
3o
5o
9o

Below lists common uses for the different degree fin plugs:
0o – centre fins
3o – quad rear fins/longboard trailer fins in surfboards with little concave
5o – quad rear fins/longboard trailer fins in boards with heavy concave or thruster side fins in boards with little concave
9o – thruster side fins in boards with heavy concave