Stainless steel filter mesh, is up to 40 to 60 micrometer Can be install on pre-waterway of home main water pipe,purify your whole household water.Also can be installed on the waterway of washing machine or water purification system to improve their lifespan Effectively remove limescale,thermonatrite,plankton,alga,rust,sand grain and other particulate matter from water swivel sludge scraper design,no need to disassemble,instantaneous cleaning Filtration accuracy:0.005mm