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Bicycle chains consist of alternating steel plates
HERE’S THE INTERESTING PART
That greasy metal snake ruining the bottom of your right pant leg is actually a masterpiece of repeated patterns. A standard bicycle chain is formed by alternating outer plates and inner plates held together by tiny cylindrical pins and rollers. This flexibility allows it to bend around the cogs effortlessly, right up until the moment it decides to pop off and leave your hands covered in black sludge.
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