Professional manufacturing, do not need to be replaced frequently, it is very safe to use. These faucet adapters are manufactured with copper material that can serve you for years without damage. The faucet adapters can be installed in your kitchen sink or garden hose. Features -Color:Silver -Material:Copper -Size:2.10X2.00X2.00cm/0.83X0.79X0.79in -Size:2.20X1.70X1.30cm/0.86X0.67X0.51in -Size:2.20X1.90X1.30cm/0.86X0.75X0.51in -Size:2.30X2.20X1.30cm/0.90X0.86X0.51in -Specification: 1/2 inch outer thread to outer 22mm, internal thread 18 to outer 22mm, internal thread 20 to outer 22mm, internal thread to outer 22mm -These copper aerator adapters are suitable for most common sinks and most types of faucets. -Multiple size faucet adapters, widely used. Fit most common sinks to connect garden hose. -Reasonable design makes it easy to install and use, bringing you more convenience. -Enough quantity and different specifications to meet your different needs, or you can share them with close neighbors. -Fit a variety of faucets, are intended to attach to garden , sink sprayers, and water filters etc. Package list: 8 x faucet aerator adapters