The VPI Dual Pivot Assembly for JMW Tonearms is compatible with both 3D and metal JMW tonearms.
We've found this to add more focus especially with vocals, and so comes highly recommended. Fitment is as simple as screwing on the adaptor, and then installing the pivot plate to the armboard. You can then adjust the azimuth with the set screw, and you can also unwind it if you want to occasionally listen as a uni-pivot as well.
1/16" Allen Wrench