Has your beautiful vintage guitar spent its life in the closet because it can’t stay in tune? Give it a new life with the Hipshot Vintage Tuner Upgrade Kit! Our Grip-Lock system securely clamps your strings for better tuning accuracy and stability, while the patented UMP™ (Universal Mount Plate) allows you to install the machines without marring, modifying, or damaging your headstock in any way. In fact, the only tool you need is a 10mm wrench. Now you can pull your classic out of the closet with no risk of lowering its value.