One of the most modern new features in longboard fins for a while, in a tried and tested template. The first screwless fin fits into the fin box using a ball-bearing base. This means you can travel without any tools and even adjust the fin position in the water. The dolphin fin works great as a single or 2+1 in bigger stuff. Loads of hold and drive from the stiffer base and progressive flex all the way to the tip for super tight turns.