The biggest problem, besides from the fact that it’s a fake/replica/made of discarded original parts, is that the fit of the arm rest on the bearing column is subpar, and the arm rest will come loose, twist and pinch off the anti skate spring, rendering the tonearm useless.
In other words you could have bought a Rega RB330 tonearm for under $700 and saved yourself a lot of time and money - and got better sound.