Alnicov 4MM Guitar Truss Rod，2 Way Adjustable Guitar Truss Rod，4MM Allen Nut，460MM Over All Length，Red

Description:1.Easy to install,the Hot Rod fits in a straight channel2.Our Hot Rod neck adjustment system features twin rods in threaded brass collars3.Smooth 2-way action corrects upbow and backbow,giving complete control over the neck4.Has a smaller 4mm (5/32")Allen nut for most instruments5.Overall length 460MM/18”for acoustic guitar neck with 14th fret at the bodyinstallation instruction:1.The Hot Rod fits in a straight channel.For proper operation,this truss rod must be installed so that the active rod (the rod with the adjustment nut) is below the passive rod.A wooden filler stick is not required2.Smooth 2-way action with superior strength for stubborn necks3.Our Hot Rod neck adjustment system features twin rods in threaded brass collars.The stainless steel active rod turns for smooth neck alignment,with 2-way action to correct upbow and backbow4.The Hot Rod requires an access cavity for the adjustment nut,and a straight 7/32"-wide x 7/16"-deep slot (measured from the bottom of the fretboard) for installationPackage Included:1 X Guitar truss rod

• Easy to install, the Hot Rod fits in a straight channel
• Our Hot Rod neck adjustment system features twin rods in threaded brass collars
• Smooth 2-way action corrects upbow and backbow, giving complete control over the neck
• Has a smaller 4mm (5/32")Allen nut for most instruments
• 460MM/18inch overall length for acoustic guitar neck with 14th fret at the body