Workpiece holder fulfills its purpose, ranging from

For the price I find the product manufactured good enough, but they are at the cutting edges even burrs that I have ground off so as not to accidentally make a scratch in the watches.
Under the holding nipples I have put a little film on the bucks, so even there, no scratches on the glass of the watch arise.
After some here have criticized the holder is not sufficient for large watches, I have checked this with my largest clock, diameter 47mm. The clock fitted into the holder and settled well stall. However, this was just the trick to turn the outer metal bracket 180 degrees, because the thread is cut in the side bracket, I was able to gain the missing millimeters.
With a small file, it is also the plastic nipple roughen that are really very smooth, but so far no clock me even without roughening, slip.

Overall, I am satisfied with the product for the price and forgiving 4 stars. If the price is lower and the production better there. 5