Futures Fins AM1 FG Control Series Tri Fin SetAM1 FG Control Series Tri Fin Set The AM1 Fiberglass fin was designed by iconic shaper Al Merrick. Of the three AM1 sets this is the stiffest version, making it optimal for stability and control in powerful surf while the additional rake provides hold when driving through carves. A wide base and refined tip provides hold off the bottom and release off of the top while the fiberglass adds durability in reef breaks. DIMENSIONS : Size : Medium: 65kg 88kg