Universal Mast foot featuring a one size fits all urethane tendon. Screws into any standard fin-box mast-track. Used by most professional sailors this base attaches all your Goya boards to all your Goya rigs. The release system is Universal Pin. Its low height and wide base plate distribute the forces of the sail evenly onto the board deck, while a padded layer absorbs shocks and protects the deck of your board.