The Omnipure K-Series K5515 inline filter is a 1 micron carbon block. This filter has 1/4 FPT and 1/4 QC fittings. It can also be used in ice makers, refrigerators, beverage equipment, drinking fountains, under the counter systems, R.O.Systems and in conjunction with purification systems. This filter aids in the removal of sediment, cysts, lead, taste, odor and chlorine taste and odor.