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The original was posted on /r/whatisthisthing by /u/Novel_Dependent_8714 on 2023-08-22 06:08:58.

Original Title: This thing is metal and the shape of a pen but it’s hollow. The really interesting thing about it is that once you swing the attached clamp off it swings open to reveal it’s hollow interior. It also has holes along it’s sides. And it has a keychain on the top. So, what the heck is it?