Good material: the washers are made of stainless steel and quality rubber, durable for you to use Size detail: outside diameter is 1 inch/ 24 mm, inside diameter is 9/ 16 inch/ 16.6 cm, compatible with 5/ 8 inch washing machine and 3/4 inch garden hose; Please check the size before purchase Function: fits hand held hoses and some shower heads to filter sand and gravel to reduce the possibility of nozzle clogging Package you can get: it comes with 20 pieces of 304 stainless steel filter gasket seal rubber washers, adequate to using in long termDesign: the rubber washer with stainless steel filter mesh, serves as a flow restrictor can reduce the waste of water effectively Color: black Material: stainless steel and rubber Inner diameter: 9/ 16 inch/ 16.6 cm Outer diameter: 1 inch/ 24 mm Package includes:20 x Filter gasket seal rubber washerProducts from KJ's store