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I have used several different types and styles the past 20 years for several different uses and have had several issues of them seizing up for different reasons in different ways. I have had nothing to complain about on this style made with a bolt head and not a screw head so I ordered these for that reason. once they got here I checked them out and was very very happy on the construction knowing that if and when I will need to remove my truck cap that I will have no issues that they will come loose right away.