This Product is analogous on the 4019 in that it works by using an ER16 with the jaw chuck. Meaning it only grips at 3 to 4 factors, which may have an affect on precision, but is arguably combatted by using other accuracy-concentrated parts like ball screws as an alternative https://www.antsmachine.com/what-are-the-application-ranges-of-universal-lathes.html