The Omnipure K-Series K5668 inline filter has 1/4" OD Quick Connect fittings. This filter has 1 pound of KDF medium that help in removing chlorine and water-soluble heavy metals and controls scale.This filter can 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 taste, odor and chlorine taste and odor Additional Details ------------------------------ Product description: The Omnipure K-Series K5668 inline filter has 1/4" OD Quick Connect fittings. This filter has 1 pound of KDF medium that help in removing chlorine and water-soluble heavy metals and controls scale.This filter can 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 taste, odor and chlorine taste and odor