If your paddle board or kayak has a US Fin Box, this Adapter will allow you to attach the Bixpy Motorto your Paddle Board or Kayak within minutes. Make sure that you are getting the right Bixpy fin for your fin box. * Motors shown in the photos above are not included in the adapter kit FEATURES & SPECIFICATIONS Protection: Water-proof, dirt-proof and corrosion resistant components Water use: All materials made for salt water or fresh water use Pug & Play: adapter easily replaces your current US Fin INCLUDES US Fin Adapter ADDITIONAL INFORMATION Protection: Water-proof, dirt-proof and corrosion resistant componentsWater use:Marine grade stainless steel components for salt water or fresh water use INSTALLATION GUIDES * Motors & outboard battery in pictures not included.