Colour: Carbon Pink * Set of 3 Fins * Fin Setup: Thruster * Construction: C6 (Carbon and air infused) * Lighter than Honeycomb construction * Responsive flex * Ride Number of 5.5 Side Fins Centre Fin Area 12.56 12.56 Height 4.15 4.15 Base 3.97 3.97 Foil FLAT 50/50 Get onto the waves ready with the new Futures F2 Alpha Thruster Surfboard Fins - Carbon Pink! This thruster set is an X-Small size Balanced fin with a ride number of 5.5. It is constructed with Alpha’s C6 composite material which is a carbon and air infused, providing you fins that is lighter than Honeycomb. It also has a responsive flex, which is one of the characteristics of C6.