Stops the noise of the water from the scupper holes and works well when you need to drain the water out. Leave them open when its raining and closed when its not.
Fit well to plug holes for fishing poles when not in use to keep water out of inside of boat.
Fits and functions perfectly well.
They work great
As with every purchase direct from Feelfree US, the ease of ordering and quick shipping makes it a no brainer when I need Feelfree products. I go straight to the source.