What Size wrench is used to adjust the Bourgeois Double Action Truss rod?

 We currently use a 5mm wrench (Allen wrench, Allen key, hex wrench, or hex key).  Some older guitars used 5/32" wrench.   Stewart-Macdonald #6110 is the current correct size. Any hardware store should also carry a wrench of the correct size.  

Our truss rod is a "double action" truss rod developed to work on both a forward & backward bow. 

Truss rod adjustment involves many subtleties.  If you have no prior experience adjusting truss rods, or if a simple adjustment  does not give you the desired outcome, we recommend taking your guitar to an experienced technician.   

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Page last updated: October 29, 2008