Who wudda thought a question about rails could be soooooooo interesting? Here's an unrelated tid bit. My wife got a rash, had problems with it being brought under control, ended up with the zillion dot things on her back to test for allergies. Turns out she gets a pretty strong reaction to nickel. Doctor quizzed her a lot about her wrist/lower arm where there was a persistent rash. Right where you wear a watch, for example. Wife never wears watch of any type. On and on..... well, the other day we were out fishing and as she sat in the 'mates' seat, she put her hand up on the grab rail, right where her wrist contacts the rail is where the rash is...... totally unrelated to the size of the rail, but I assume the grab bar is 316SS with lots of nickel.