Features: No rust, anti-corrosion, practical and durable. The threaded adapter is no rust, anti-corrosion, practical and durable. Ideal for water faucets, suitable for the connection between female faucet and female aerator, filter, hose, purifier, shower, etc. Easy to install, and equipped with 2 sizes of silicone gaskets to prevent water leakage. This faucet aerator is designed to reduce unnecessary water consumption (washing hands, brushing teeth, shaving, etc.) from your faucets. Name: Water Faucet Adapter. Color: Silver. Material: High quality chrome-plated brass. Dimensions: 16mm male - 22mm male, 18mm male - 22mm male, 20mm male - 22mm male, 22mm male - 22mm male, 24mm male - 22mm male. Package includes: 2 pcs (Faucet Aerator Connector + Gasket). Please measure the size as shown in the picture and make sure the type is exactly what you need. Please allow 1-3mm error due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.