Replacement Trem Bar

[gps100proof]

I have Jk20 Pro that i came across. It has a Lisenced Foyd trem but it came without the arm. Heres the thing, Unlike most Floyds, its threaded on the inside of the hole, instead of the outside. Just to guage it, I put a Fender trem bar in there but the hole is bigger than that. What trem is this, and where and which trem bar do I need?

[toejam]

It's probably easier to take out the old receptacle and put in a whole new assembly with collared arm.

https://www.stewmac.com/Hardware_and_Parts/Bridges_and_Tailpieces/Bridges_and_Tailpieces_for_Electric_Guitar/Floyd_Rose_Tremolos/Floyd_Rose_Special_Series_Tremolo_Arm.html

[gps100proof]

It's probably easier to take out the old receptacle and put in a whole new assembly with collared arm.
https://www.stewmac.com/Hardware_and...emolo_Arm.html

I was unaware this could be done! Does it just screw out?

[toejam]

Yes. Should just unscrew with an allen wrench underneath.