Features: This 9 in 1 universal faucet aerator removal tool effortlessly unthreads concealed/housed aerators across AIR, and other standard size (M21.5 M16.5) with Accuracy engineered ABS construction. build from strong carbon steel and steel component, this Small wrench resists deformation while maintaining a lightweight profile for repeated maintenance tasks. Ideal for homeowners, professional plumbers, and DIY enthusiasts requiring reliable aerator replacement solution in residential or commercial setting . streamlines kitchen/bathroom faucet repairs by removing clogged aerators or installing new water saving models during routine maintenance meeting . Includes four interchangeable aerators to water flows pattern and pressure setting for varied sink configuration and user preferences. Specifications: Component : steel Size: about 49x74mm/1.92x2.91inch Package Includes: 9 in 1 Faucet Aerator 4xWater Nozzle note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the differences between different monitors, the picture may not reflect the actual colorful of the item.