I tried a 24mm one from my bathroom. It wouldn't fit.
I bought a 22mm one and that was too small.
Today at a plumbing store (that didn't stock them) I was told there are
various types by different manufacturers.

Somebody please tell me that is wrong!


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Mageia 5.1 for x86_64, Kernel:4.4.114-desktop-1.mga5
KDE version 4.14.5 on an AMD Phenom II X4 Black edition.