Looks like good HHS end mills. But be careful when ordering - the main heading on the listing suggests you will receive the following sizes (3, 4, 5, 6, 8, 10, 12mm). Further in the text they give the following sizes (2, 3, 4, 6, 8, 10, 12mm) which are the sizes that arrived. If you don't really need 5mm, you're fine.
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