So I've heard comments about long delivery times but mine arrived the next day and less than 24 hours later, there must have been excess inventory to have arrived so quickly. Out of the box this machine is sturdy, looks like it was CNC machined and all the hex bolt threads are tightened and they put a hex wrench on it for each bolt size! As other reviews have reported, it's only 12v but packs quite a punch. This outperforms any rotating attachment for stationary grinding or polishing! Great addition for delicate dental applications! The only problem was that the pulleys were slightly offset from the base, which can easily be corrected by adjusting the angle of the work table by around 2°. Otherwise two thumbs up!