Understanding Threading
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Internally Threaded What it means: The post is smooth, and the little screw is inside the jewelry. Why customers like it:
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Externally Threaded What it means: The screw threads are on the outside of the post. Why customers care:
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Threadless What it means: No screw at all. The post is smooth, and the top has a tiny pin that bends slightly to hold it in place. Why customers love it:
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