Thank you for viewing this item! Cylindrical cartridge TK7815C1 for water purifier, light blue - Model: TK7815C1 - Color: Light blue - Shape: Cylindrical - Application: Water purifier cartridge I have multiple units available, so please comment if you would like to purchase more than one. To prevent any issues, please feel free to comment with any questions you may have regarding the condition of the item. Please understand that this item has been stored by a private individual. Although it is unopened and new, it has been in someone's possession, so please refrain from purchasing if you are concerned about minor details. *Please feel free to comment with offers for a discount. *I do not have any pets, and I do not smoke.