( 3 Fin Set ) LoxBox Compatible:   Versatile combo set. Use the trailer fin to add some stability or charge bigger waves.( Side Fins ) HEIGHT:  5.37" / 136 mm   BASE: 5.25" / 133mm AREA: 19.57"² /  126.26 cm²( Back Fin ) HEIGHT: 3.12" / 80 mm   BASE: 3.37" / 87 mm AREA: 7.81"² /  50.41 cm²