So after talking about how to lower or heighten guitar string action, it's time to talk truss rods for electric and acoustic guitars. And we better begin with what they are, and what they actually do.

Most Complete Beginner Guitar Set: Donner acoustic guitar kit includes acoustic guitar, padded gig bag, strap, digital clip-on tuner, capo, pickguard, extra pack of string, 4 Picks, clean cloth ...