Shower cartridge with model number PM7163-3B from Sanei Suisen. This is the PM7163-1B, which contains one cartridge. Due to shipping costs, the item may be shipped without the box, with only the contents and minimal packaging. Please purchase only if you understand that this item has been stored at home. Please forgive any oversights, misunderstandings, insufficient explanations, or differences in perception. Please read my profile. No price reductions, please. Due to circumstances, replies and responses may be delayed. Especially difficult on weekends and holidays. Thank you for your understanding. We are not responsible for accidents, non-delivery, damage, or loss during shipping. Compensation is as per the carrier's regulations. If you cover the difference in shipping costs, we can ship using other methods.