Wellon Anti-Bacterial Ceramic Ball Big is a type of water filtration product designed to inhibit bacterial growth in water. These ceramic balls are typically used in water purification systems to improve water quality by preventing the growth of bacteria and other microorganisms. They work by releasing trace amounts of silver ions into the water, which have antimicrobial properties. This helps to ensure that the water remains safe and clean for consumption. The "Big" in the product name likely refers to the size or capacity of the ceramic balls, indicating they are suitable for larger water filtration systems or volumes of water.