Usage Tips:Dimensions: 25 cm long.Includes 4 x 7" ceramic filters, 4 x rubber washers, 4 x wing nutsContains activated carbon: activated carbon in a ceramic water filter to reduce chlorine, reduce taste and reduce odorMaterial: The main body is made of natural sintered diatomite, has excellent high temperature resistance and high pressure resistance.0.5 micron pore size (human hair is 40-300 microns), cleanable filter elements are designed to remove suspended solids, hydrogen sulfide and leadApplicationThis replacement filter is suitable for most household, travel, lightweight, large countertop and water cooler water filtration systems.It can also be used with household buckets or other water tank faucets to DIY a water filtration system.