Home FCS GMB-5 TRI SET FCS GMB-5 TRI SET Code: 8999 127 € Select a size Store Availability THRUSTER set of 3 surfboard fins. Specifications: p> Size: Large Fins included: 3 Material: Performance Core Base: 4.41" / 112mm Depth: 4.74" / 120mm Area: 15.26"? / 9847mm? Slope: 32.9? Profile: central fin - symmetrical, side fin - flat inner side