Product Type: This metal music tool is a piano repair tool designed as a piano tuning wrench for adjusting piano action and keyboard frame hardware during workshop service.Compatibility: Built as a keyboard frame adjustment wrench, it fits the square 6 mm opening shown in the images and is intended for precise work on grand piano action components.Structure: The angled head and straight handle give this piano action adjustment tool better reach and control, helping technicians work more comfortably in tight internal areas.Durability: Made with a solid metal structure, this wrench offers a stable feel for repeated tuning and repair tasks, making it a dependable choice for regular instrument maintenance.Practical Use: For tuners and repair personnel, this tool helps fine-tune frame screws and support accurate adjustment work, improving the overall service workflow in a piano workshop.
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