... activated carbon Can filter iron matter, impurities and soil Faucet Water FilterFiltration system: high density filtration core + activated carbonCan filter ... Diameter: 3.8CM High: 7.1CMMaterial: High-density water tender filtration cotton, activated carbon,PP,PS,PVC colophonyFunction: ... or depends on your water's quality or water using frequency.Model Q2 has an adjustable hoop, which can be adjusted ...