Looks like build quality or materials. However, it doesn't seem to snap as well as the original part. The original part snaps into place at the hinge point with a noticeable click, but it's hard to tell if the Ulanzi cover is secure or not. I tried connecting it at a slight angle and applied quite a bit of force to it, but I just wasn't sure if it clicked or not. I would try to close the lid then it would detach from the hinge point. Of course, this can only be a one-time mistake, but I'm disappointed.
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