The screen and the fitting both made of high-level food grade 304 stainless steel, which is durable,healthy for people body.It also has good corrosion resistance and heat resistance performance, can be used many times with a long service life. The Screen: Length-12 inch ,Thread-1/2 inch Male NPT;The Fitting:1/2 inch Female NPT x 1/2 inch Female NPT. Suit for most homebrew ball valve. You can use the brush to gently scrape along the screen to rid off the trub on screen, or rinse water through the inside, then let it dry.You just shake off the excess grain sediment when it dried.