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. 
									
	
		
	
																	Find the right truss rod wrench size needed in a database of over 75 guitar and bass brands including fender prs gibson martin ibanez taylor jackson takamine schecter yamaha breedlove and many more. 
																	Includes a 4 1 2 bent leg. 
																	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. 
																	What year is your guitar. 
															
													
									
	
		
	
																	Martin switched to the 2 way adjustable truss rod in 2006. 
																	The older 1 way rod is just past the 1 cross brace.