I believe that almost all members of HMT who are using lathe have one. Or should have one.
Mine is constructed from FBZJ-ER20-20, 6201 ball bearing and 6 cm long HSS round bar dia 12mm.
This versatile tool (FBZJ-ER20-20) is also in use as boring bar holder, keyway cutter holder and that
62012Z ball bearing on 12 mm shaft is in use as edge finder for large works in the mill.