aerator-wrench
thingiverse
This is a wrench or key to open the aerator out of the faucet for cleaning without needing any other tool. It's easy to use and can be placed anywhere near the faucet in the kitchen or bathroom, its thin design requiring small space. Inside measurements are 25mm diameter, 22mm key width, and 2 or 3mm thickness. Have success and fun with it.
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