The Futures Fin AM1 Fiberglass Al Merrick Surfboard Fin Set is designed by the legendary shaper Al Merrick. The AM1 Fiberglass is the stiffest fin in the Al Merrick fit set by Futures. The stiffness of the fin offers for more stability in larger, more powerful surf. The additional rake provides greater hold in the tube and while driving through turns. Fiberglass material adds durability when surfing shallow reef breaks.