PROton fin v3
thingiverse
Based on AK's Staccato Fin, version 3.1 resolves the notch size issue.
Download Model from thingiverse
With this file you will be able to print PROton fin v3 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 PROton fin v3.