Introducing the Black Berkey® Replacement Elements (set of 2)! Our Black Berkey® elements are made with advanced micro-filtration technology that removes bacteria, viruses, cysts and harmful contaminants from water. Each element has a lifespan of 3,000 gallons or 6,000 gallons for a pair. This set includes two replacement elements to upgrade your existing filter system or replace worn out parts in your current system. The Black Berkey® filters go beyond other filtration methods by removing heavy metals such as lead and mercury from water without using chemicals like chlorine or fluoride. In addition to this superior level of purification, it also reduces bad taste and odor for delicious-tasting drinking water every time