It appears the packaging on these normally open switches was opened before shipping to me. There was a tear in the hard plastic bag, but the soft mailing envelope that contained the bag was undamaged. There are also no missing pieces at the bottom of the cover. It's missing a total of 3 knobs and somehow there are 2 extra lock nuts. However, I've tested the ones I have and they seem to work great. There is no accidental contact, the circuits open immediately upon depressurization and there is no resistance between the contacts when the switch is closed. I have absolutely no problems with the ones I tested and I'm sure they will work perfectly why I bought them. If I hadn't been bitter and petty about not getting everything I paid for I would have given it a 5 star rating for sure.
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