Use the martin guitar allen truss rod wrench to adjust your guitar s neck to achieve the action you desire.
Martin guitar truss rod adjustment tool.
Vencetmat 4mm 5mm truss rod wrench allen wrench tool ball end for martin acoustic guitar truss rod adjustment and deep or narrow truss adjustment.
The older 1 way rod is just past the 1 cross brace.
Martin switched to the 2 way adjustable truss rod in 2006.
Includes a 4 1 2 bent leg.
What year is your guitar.
Pagow 4mm 5mm guitar truss rod wrench ball end allen wrench tool for martin acoustic guitar truss rod adjustment for deep or narrow truss adjustment black 5 0 out of 5 stars 1 8 99 8.