Core Equalizer Fins 48mm 4 PieceEqualizer 3 Fin 48mm Core Equalizer G10 48mm fin set Our biggest fin, the Cutback, is designed for extreme grip in any conditions. Aim high, go big and let's rip with this finely tuned G10 fin. G10 is a continuous filament, woven, fiberglass that we specifically use on all our fins for its super high strength and dimensional stability. Product Information: Kitboard fin set G10 from Core 48mm If you are looking for a combination of grip and freestyle