HotelSpa 1125 Universal High Performance Shower Filter with Replaceable 2 Stage KDF/CAG Cartridge. Can be used with any Overhead Shower Head, Handheld Shower or Shower Combo (Premium Chrome Finish) HotelSpa 1125 Universal Shower Filter with Replaceable 2 Stage Cartridge. Can be used with any Overhead Shower Head, Handheld Shower or Shower Combo Replacementfiltercartridgefor HotelSpa UniversalShowerFiltercan be purchased separately. ASIN B017Y7NCXS (HotelSpa ReplacementShowerFilterCartridgefor UniversalShowerFilterModel #1135) Contains KDF (copper and zinc media) which is known to help remove chlorine and its vapors, damaging chemicals, heavy metals, minerals and impurities from your shower water INSTALLATION:Tools-free Installation. Connects in minutes to anystandardoverheadshowerarm, notoolsrequired BEST 5 YEAR LIMITED WARRANTY: Hassle-Free US 5 Years Limited Warranty with LIVE customer service representatives in US.