• 4 mm Allen Nut for adjustment
• Smooth two-way action corrects upbow and backbow
• Easy to Install

4mm Allen adjustment nut and approx. 18 inches long.  Perfect for banjos.  Overall length includes the nut.

Easy to install.  Fits into 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 required. 

The truss 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 installation. 

Item# 134A