Aerator key material: the faucet aerator keys are made of ABS, strong and sturdy, which can effectively remove faucet aeratorsSize: 3 pieces M16.5, 3 pieces M18.5, 3 pieces M21.5, 3 pieces M24, 12 pieces in all, with 5 pieces cache faucet aerator key removal wrench tools, sufficient quantity can meet your needsFit most cache aerators: our wrench tools are suitable for most of cache faucets aerators, which are practical and convenient in daily useEasy to use: with these aerator keys, you can easily unscrew your faucet aerator out and then replace or clean the blocked one, fixing low flow faucetsAerator key: help remove most cache faucet aerators, please measure carefully before buying in case of unfit situationColour: blue + gray + redMaterial: plasticPackage Contents:1 set x Cache AeratorsOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.,