6" [W] x 12

but also have 100% UV protection

extra strength performance slick

Wetsuit Series: Absolute Wetsuits

Ultraflex DS neoprene

FCS II Christenson 9' PG Longboard Fin Colour:BLACK 6" [W] x 12FCS II Christenson 9. 0" Performance Glass Longboard Fin Performance Glass Performance Glass (PG) fins are machine cut from layers of solid fiberglass. These fins are stiff, and are widely used by pro level surfers because the integrity of the flex is maintained under immense force, and in the most extreme of conditions and situations. The FCS II Tool Less Longboard System No need for a plate and screw. Ability to adjust your fin position in the box