... , with material AISI 1008-1086.3. Chrome steel ball,with material: AISI521004. Flying saucer steel ball5. Precision casting, including auto parts, machine ... , chemical industries, etc.DETAIL SPECIFICATION: ItemAISI440 Stainless Steel BallCategoryStainless Steel BallMaterialAISI440Size2.0 mmGradeG500Hardness ( HRC)HRC58-65ApplicationBicycle, bearing, pulley, slide, handcraft, shelf, luggage, hardware ...