Thank you for your interest in the product. Please read the following before bidding. 【Product Description】 Product Name: Replacement Water Filter Cartridge for Shower Head - Compatible with MTG ReFa FINE BUBBLE PURE Shower Heads - Water Saving, High Water Pressure, Chlorine Removal, Micro-Nano Bubble, Replacement Parts Brand: Seisen Pure Water Supply This is a set of 3. 【Product Condition】 Condition: I am selling these because I purchased the wrong shower head compatibility. One of the three has been opened in an attempt to replace it, but it was not compatible and is therefore unused. This is compatible with MTG ReFa FINE BUBBLE PURE. Notes: Please understand and agree to purchase as one of the three has been opened.