Packing list:40 pcs*shower head screen filter gasket and rubber washerDescription:Material: RubberColor: BlackDimensions: Outer diameter 1.9cm,inner diameter 1.1cm,thickness 0.3cm (with mesh gasket: outer diameter 1.9cm,inner diameter 1.2cm,thickness 0.3cm) Complete Set: Includes 20 shower head screen filter gasket and 20 rubber gaskets,providing ample replacements for your shower head and hose needs Optimal Size: Designed for 1/2" shower heads and hoses,with an outer diameter of 19mm,an inner diameter of 12mm,and a thickness of 3mm Leak-Proof Design: The screen filter and rubber washer form a tight seal,effectively preventing leaks and saving water Durable Materials: Made of durable stainless steel and rubber,these components are rust-resistant and suitable for long-term use Powerful Filtration: The stainless steel seal o ring hose net removes impurities and hard water,improving shower quality and extending the life of your shower head.