Material: these aerator keys are made of durable ABS, non-toxic, odorless, and safe to use, convenient to remove with a long service life Note: the cache faucet aerator keys can only remove aerator with serration and screw thread, please measure carefully before buying, not compatible with moen faucets Practical and functional: the faucet aerator tool set to replace or clean the blocked aerators, effectively fixes the low flow faucet and gives you smooth flow again Wide application: with wide compatibility, the faucet aerator keys are fit for aerator with serration and screw thread, and come with 5 pieces to meet your need for use and replacement Easy to use: cache aerator keys can remove most aerator, replace or clean clogged air ducts with our aerator removal key to fix low flow faucets, the ABS wrench prevents scratches or damage during aerator removal or installation, bringing you a relaxing life Note: The data are manual measurement, please allow a 1-3cm error, due to the differences between the light and the display, there will be a certain color difference, the specific received in kind prevail.