Compact replacement tuned button designed for Ctune 16hole flutes with E split. Copperplated and silverplated finish provides a durable, corrosionresistant surface and a professional look while preserving original instrument function. Engineered for use on childrens and adult beginner flutes where a reliable E split mechanism and consistent key response are needed. Key benefits Restores playability: replaces missing or worn tuned buttons to recover proper key action and simplify common E fingerings. Better tuning control: E split compatibility helps stabilize low E notes and makes common fingerings easier to execute. Durable finish: copperplated base with silverplated outer layer balances wear resistance with a classic appearance. Easy fit: sized for standard Ctune 16hole flutes used by beginners and students, compatible with most common beginner models. Main features Function: tuned button for flute keys, compatible with E split mechanism Compatibility: Ctune flutes with 16 holes; suitable for children and adult beginner instruments Material: copperplated with silverplated finish for durability and appearance Performance: restores key contact and supports accurate finger placement and smoother action Practical use scenarios School band repairs: quickly a worn or missing key button on a student Ctune 16hole flute to minimize downtime between classes and rehearsals. Beginner practice: upgrade an entrylevel instrument to achieve more consistent E fingerings and smoother key response during lessons. Instrument maintenance : keep on hand as a standard replacement part for routine servicing of 16hole Ctune flutes. Compatibility and sizing Designed for standard Ctune 16hole flutes. Confirm your instrument uses a 16hole Ctune layout with an E split mechanism before ordering. Care and installation Clean with a soft cloth after use. Installation typically requires basic instrument tools or a technician for secure fitting. Avoid abrasive cleaners that could damage the plating. This replacement tuned button offers a practical, reliable option for restoring function and appearance on student Ctune 16hole flutes with an E split.