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mkseven said..Nice but eventually the pins break out of the plastic, much of the cracking is caused by dodgy stainless pins rusting & expanding in the plastic. Unfortunately one of windsurfings consumables

AL360 use Brass or Bronze, chrome plated I believe.
Have seen them not chrome plated as well.
316 Stainless "Marine Grade" will also corrode if left in still salt water, there needs to be some flow over the surface, a bit hard inside a plastic injection moulded item.
Water gets in due to the flexing of the plastic etc.
Not sure why all manufacturers don't just use CuNi or Duplex, both very good corrosion resistance.