1. Filterable mineralization ball, a variety of natural beneficial mineral composite, beneficial to human health 2. Effective filtration of rust, sand, impurities, sediment, parasites, etc., calcium sulfite dechlorination ball effectively absorbs residual chlorine in the water, water safety 3. Recommended replacement cycle: 3-6 months (depending on water quality) 4. Easy to replace, safe to use 5. Size: about 11.5 x 2.4cm
