Anyone know what this is?

[axetogrind]

The JT-6 trem is a great unit, the after the nut string lock works great.You got a nice deal there.
FWIW I have never had a problem with that set up.I have a very well worn USA Jackson with the JT-6 trem and never has it failed me.Rock solid trems IMO.

Thanks for the info Straycat. I look forward to it's arrival.

[toejam]

89' Chaparral (USA)

Cool. USA Hamers rock!

[DHardmanJr]

I was watching that one ... I think you got a sweet deal on it.

[straycat]

Hamers do rock!!