Tone Pros T1ZS-G metric locking tailpiece in Gold. The studs are metric for Epiphone electrics and other import stop tailpieces.
The tailpiece, however, will fit any stop bar tailpiece with a 3 1/4" stud spacing if you reuse your existing studs.
This stop tailpiece ups the ante by locking the tailpiece to the posts via two small set screws on the sides of the tailpiece.
This design is their best , the tailpiece height is very easy to adjust prior to locking.