Michael Kelly Bass- Truss Rod Size (Element 4OP)

[michaelrais]

Hello everyone,
I am trying to find the right size truss rod wrench to adjust my neck.
I tried reaching out to Michael Kelly to get an answer.
If anyone can shed some light on this, I would greatly appreciate it.
I have tried 4mm-5.5mm (nothing works)
Element Bass: Click Here

 

[Matt Liebenau]

I’d expect Asian made instruments to be 4mm most of the time and occasionally especially older ones to be 5mm. The usual Fender size is 3/16” but I’d be surprised if it was that. Is 4mm and 5mm too big? Too small? I know not all hex keys are created equal also. I have some 4mm keys that are loose in some truss rods and others that are snug. LMII used to ship hex keys with some of their truss rods to make sure you had the correct one.