I recently purchased this item-See if you can guess what it is-and what it actually does from the description on the back of the packaging.....and I quote as follows;
Expansion Rotary Anti-spattering Machine
series of expansion rotary anti-spattering filter adoptsthe excellent
materials and elegant craft,the wiggly and fluctuationghydrant is
available, convenient and ingenious, welcome to use theproducts
at our factory
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