This 5-piece truss rod wrench set comes will the standard allen wrench sizes any luthier would need for adjusting truss rods.  The also includes a detachable aluminum handle, that adds comfort and more torque power. 

Wrench Sizes Included: 

• 4.0mm (L shape)
• 5.0mm (L shape) short
• 5.0mm (L shape) long
• 1/8"-3.1mm (L shape)
• 3/16" 4.76mm (straight)