Review on VOLV Precision Stainless Steel Bearing by Robert Xayamonty

I measured these with my most accurate budget calipers and scales, the diameter of these measured 6.34mm, their average weight from a sample of the whole group, and then divided by the quantity is 1.0248 g per piece (which is an interesting number since 1024 is easily recognized as 1K and corresponds to the 8 at the end of the binary sequence), so its density at room temperature is 7.68 g/cu. See this does not allow to determine the exact type of stainless steel, there are so many types on the internet and this advertisement only says it is "Premium" which for my purposes has no practical effect, but only for experimenting with it Spherical magnetic metal objects, which theoretically do not tarnish, are plentiful in stock. Stainless steel is surely more expensive than regular AISI 52100 Cr bearing steel, right? Speaking of quantity, my order included 1 bearing for free, total 31.