The Dex is designed for light surfers or groms that are tranissioning from an extra small fin (eg the Grom). The Dex is a high performance fin designed for tight pocket surfing and performing areial maneuvers. 

Compatible with FCS Style Fin Systems: FCS ll | X-2 | Fusion

Size:    Small: 45kgs - 60kgs

Base:    111mm | 4.37
Depth:    110mm | 4.33
Sweep:    33 Degrees
Foil:    I.F.T (Inner Foil Technology)