The STING is a center fin upgrade for your SUP and is compatible with a wide range of stand-up paddleboards. The add-on improves stability, enabling paddlers and wingers to maintain their intended course while minimizing lateral drift. The base plate features an integrated fin box and the Kumano System to ensure a hassle-free installation, allowing users to quickly and effortlessly equip their board with this drift-stopping accessory.Package consists of:1x STING SUP Fin 9''1x Base Plate with Tensioning Straps1x Thumb Screw M4 stainless steel1x Threaded Fin Blade3x KUMANO Plugs