HDM 8.75 inch Wave/Race Blade Fin Click-It SUP Fin featuring tooless Click-It install system.
HDM fins are a high density molded fin that features a special blend of fiber and mix of plastics to yield a lightweight but stiff fin at an economical price. HDM fins will be approx. 25% lighter than solid fiberglass fins.
Simply slide the front of the fin into the box channel and then press the base down into the box. Spring loaded ball bearings click into the channel and hold the fin in place.
Break-Away Fin Plate Bulk Pack, 100 screws and slider plates. Break-away plates are made from a brass insert and plastic plate and are designed to give way if the fin strikes an object. Works best with fins that have the screw going through the front of the fin tang.