This Reel leash attaches instead to the board with 2 screw holes instead of one, and hence does not slowly undo the screw fin, with the result in the fin and screw falling off, but also then you have no leash fixing on the board. Fits all boards with 2 screw fins (Cabrinha boards prior to 06 all used one screw on the fin, but this can easily be changed to 2 screws)