The new multi-use faucet aerator key from Danco allows you to remove or install your aerator with ease. Overtime, aerators can get clogged with mineral deposits causing erratic or slow water flow, creating a need to clean or install a new aerator. Danco’s Faucet Aerator Key Tool has an aerator wrench for internal or external threads, as well as four sizes of keys that fit most faucet brands. While wrenches and other tools can scratch or cause damage to the housing of the faucet, this faucet aerator key was designed specifically for easy, non-abrasive installation and removal of your faucet aerator. AERATOR REMOVAL TOOL - Wrenches and other tools can cause damage to the housing. The rubber coat around the wrench prevents scratches or damage during aerator removal or installation COMPATIBILITY - Fits most popular brand faucets for standard size (quarter), junior size (nickel), tiny junior (penny) or tom thumb size (dime). There is more information in the 3rd image HANDY HOUSEHOLD TOOL - The Aerator Key removal tool is perfect to keep around the house for quick and easy aerator removal and installations to keep faucet flowing freely DURABLE CONSTRUCTION - The faucet aerator key is made of durable and reliable construction EASY TO USE - The aerator key features an easy to turn handle and non-abrasive way to remove a hidden aerator