Its used to combat the tension of the strings on the neck. It stops the string from bowing the neck. You want tge truss rod to keep the neck almost perfectly straight with just a microscopic amount of relief. Back bow is no bueno and too much relief is no beuno. Dont mess with it if you dont know how to properly adjust it though. You can trash a guitar very easily with that bad boy truss rod
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Absolutely you could. A lot of guitars require different sizes so look that up before spending any money. Most saddles juse use a standard flat head screwdriver. At least they do on my SG'sThanks for the reply,
Also, could I buy a set of allen keys that would be able to fit the truss rod slot AND the saddle slots that adjust the action?
it's a mexican
A 1.5mm hex key is what you need! ;-)