No tools required for this 2-pack of fin screws. To install to onto your paddle boards, hand tighten against rubber O-ring. No tools required for these isup screws. These screws are compatible with any paddle board that has a universal fin box also called a US Fin Box.
Compatible with 99% of Paddle Boards:
Works with all US or Universal Fin Boxes
316 Stainless Steel Will Not Rust In Fresh or Salt water.