Description
The PRT-952-217 is a set of 6 Ratio InvisoMatch standard installation plates, designed for easy installation of Ratio Tuned Machine Heads.
It has 'F' Style screw holes.
Match the correct plates to the current machine head screw position on your guitar. Use your guitar's existing mounting holes for a fast, perfect Ratio Installation.
Click to open Measurement Sheet
Note!
If you are purchasing a Ratio tuning key set, these plates are already included.





