Dual-Action Truss Rod (bass)

440, 460 or 590 (therefrom 25mm length/ hex nut) x 6x 9 mm

2rods, one against the other.
One of them is "right"-threaded at one side and "left"-threaded at the other side.
When tightened by the allen nut it pulls against the other and is perfectly
adjustable in both directions !

Routing width 6 mm, depth 9 mm.

hex nut for  4 mm allen wrench key

weight :
440 mm = ca.132 g
460 mm = ca.140 g
590 mm = ca.178 g