Torebino Shower Filter, Model RS53 TORAY 〇 30% Water Saving 〇 Removes Residual Chlorine Used for about a year. See photos 4-6 for stains: 4. Water stains on the showerhead 5. Black specks (likely activated carbon from the cartridge) 6. Possibly pink stains Instruction manual included. Two adapters are unused. Cartridge not included. Thank you.