The attached month indicators rings allows for real-time and intuitively tracking of filter usage and replacement time Equipped with long and large capacity filter cartridges to extend service life and enhances filtration Multi‑Stage Advanced Filtration systems, provides maximums shower sediment filtration Make from ABS housing ensures long lasting durability, and resistance Easy Installation, universals design fits all standard G1 / 2 shower types ( fixed, rain, handheld, Manufacturer: Hsyzygian