The Cache Hidden Aerator Keys are for easy removal and installation of a hidden aerator in specially designed faucets. Comes with four different four colors coded keys on convenient key ring. Key sizes are for hidden aerators that are M24x1, M21.5x1, M18.5x1 and M16.5x1.
These keys will help you remove most CACHE aerators. The handy key ring keeps them together and includes one of each size cache aerator key: regular size, junior size, tiny junior or tt size, tom thumb or tt size.
Fits most Delta and Moen Cache Aerators
Keys included are M24x1 (Regular), M21.5x1 (Junior), M18.5x1 (Tiny Junior) M16.5x1 (Tom Thumb)