Futures F6 Alpha Five Surfboard Fins - Medium/GreenDescription The Futures F6 Alpha 5 Fin Set. The F6 Alpha 5 fin is a medium sized set in the Neutral template category. Made in Huntington Beach, the Alpha product line combines Bureos NetPlus recycled fishing nets with Futures Compound 6 carbon and air infused technology, offering stability and control at top speed. The rear fins are QD2 4. 0 with Symmetrical foil. The 5 fin set is designed to be ridden as either a Thruster or Quad set up, packaged