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Key Features
In 2006 Martin began installing a new 2-way adjustable truss rod in many models. This new rod sits deeper inside the neck and needs a long truss rod wrench to reach it. This new longer wrench will work with both styles of truss rods
L-shaped 5mm allen wrench with ball end on long leg of L. Long leg approx 5-3/4'' long, short leg approx 2-5/8''.