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42mm or 43mm - Chrome, Black, Gold
These Floyd Rose style Locking Nuts are traditionally used along with a locking bridge to create a double locking system for maximum tuning stability. This is the "Top Mount" style that is meant to mount from the top and does not bolt through the neck. These are available in either the 42mm (1.625in same as R2), or the 43mm (1.692in same as R3).