Surfboard Fins by Futures Fins The Futures F8 Blackstix Thruster Fin is a high performance set designed for larger surfers who want to generate and maintain speed through every turn. These fins are built with a precision carbon and fiberglass matrix that uses specialized epoxy resin for a lightweight and incredibly responsive feel on the water. Featuring a V2 inside foil and a neutral template, they provide a lively board sensation that works well in all wave types and conditions. With a speed generating ride number of 8.7, this large size fin set is a reliable choice for riders looking to maximize their agility and drive. • Futures Blackstix fins • Features V2 inside foil to generate and maintain speed through turns • Precision carbon and fiberglass matrix construction • Specialized epoxy resin for a lightweight feel • Provides incredible response for a livelier board • Template Category is Neutral for all around and versatile use • Ride Number is 8.7 for speed generating • Suggested for all wave types and all conditions • Size Large for 165 plus lbs