I changed mine several times over the years. They all got rusty and stained the boat. I took mine off when I painted my boat along with two front windows and the wipers. Bought an air horn in a can! No more rust.
Same old junk as the others they are not 316 stainless. Eventually the rust out and stain your boat. I have a new one on the shelf that has a 5-year warranty. It is identical to all the others.