Compatibility and function - This spare button is compatible with 100710 PosiTemp single-handle tub and shower systems. It helps restore a steady water flow and maintains a consistent water temperature for a comfortable shower experience. Please verify compatibility with your unit before use. Chrome finish and durability - The chrome plated surface resists stains and wear, keeping a clean, mirror-like appearance over time. It suits a wide range of bathroom decor styles and is easy to wipe down. Clear installation indicators - The spare button is clearly marked with C and H to indicate cold and hot. During installation, align the marks with the corresponding hot and cold water outlets so they point in the same direction for a straightforward setup. Easy installation - No professional tools required. You can install this spare button in just a few minutes. If you have questions, contact us and we will provide an installation video for reference. What you receive - 1 x spare button - Access to quality customer service for any questions or support Use scenarios - Replacing a worn or damaged spare button on a 100710 PosiTemp single-handle tub/shower to restore reliable operation. - After routine maintenance or a service visit to ensure continued accurate temperature control. - Keeping a ready spare on hand to minimize shower downtime in homes with multiple users, including families with children or elderly occupants.