Kiteboard fin
thingiverse
I purchased a pre-owned kiteboard that didn't have any fins, so I had to fabricate some myself.
Download Model from thingiverse
With this file you will be able to print Kiteboard fin with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Kiteboard fin.