The product description is here totally inadequate, the material is not even specified, under the name "IT / 1930300" was nothing rational "ergoogeln" to.
For the price of € 8.25 I was also think / hope that the price is for 100 pieces.
I then put a request to the supplier.
The answer was, the price of Euro 8.25 is for 1 (ONE) piece!
Plus EUR 3.00 shipping .....
Had waived the experiment.
To Euro 10,95 I got 100 pieces countersunk screws in stainless steel at a famous electronics suppliers.
Free Shipping.
So although I can not evaluate the product itself - but just see this path a review to tell others my experience.