1. Stainless steel ball 2. Low price & High Hardness 3. OEM service accepted 4. Low noise &wear resistance 5. Fast delivery ADVANTAGE OF COMPANY ... , bearings, trust bearings pulleys, chemical industries, etc.DETAIL SPECIFICATION: ItemAISI440 Stainless Steel BallCategoryStainless Steel BallMaterialAISI440Size2.0 mmGradeG500Hardness ( HRC)HRC58-65ApplicationBicycle, bearing, pulley, slide ...