Unfortunately I thought that it was an activated alumina ball I purchased it by mistake and I could not achieve my purpose. I thought that I would like to ask you to deal in the future if it was what I wanted.
I think that the quality is good but the price is a little cheaper. I purchased 1 mm, but the actual measurement was a mix of 1.16 to 1.26 mm. Since there is an error of 10% or more, I think whether it is better to add a hand to the notation.