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POST HOLE SIZES

Many of the GroverĀ® tuners fit the existing holes in the headstock without any modifications at all. However, we realize sometimes the existing holes need to be enlarged a bit in order for our tuners to pit properly. As a result, we have provided this chart showing the exact drill bit size needed for each tuner series. Please note, always enlarge the hole sizes from the front, or face, of the headstock.
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