Introduction: Stainless steel balls made out of 304 and 316 grades offer you corrosion resistance and longevity, with hardness degrees concerning HRC26 and HRC30 making sure longevity in demanding industrial https://kangdasteelball.com/products/high-quality-steel-balls,-10mm-158mm,-made-of-304-or-316-stainless-steel,-suitable-for-drilling-threads