Are you spending half your time tuning and the other half playing out of tune? It could be your hardware. The Hipshot® Tuner Upgrade Kit for 3+3 headstocks is a risk-free way to increase your guitar’s stability and get back to playing (in tune)! Whether you would like the security of Grip-Lock™ tuning machines or the lightness of classic style, the UMP™ (Universal Mount Plate) makes installation a snap. No special tools are required and you can revert your guitar back to original with no evidence that you ever upgraded.