304 Stainless Steel Solid Balls Φ 1mm-10mm High Precision Bearing Ball Bead. 10mm 11mm 12mm 13mm 14mm 15mm 16mm 17mm 18mm 19mm 20mm. 304 stainless steel bearing ball is a type of ball bearing made from 304 stainless steel, which is a corrosion-resistant alloy that contains 18% chromium and 8% nickel.
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