... Standard:ISO 9001:2008/SGS test report/ROHS report Stainless steel ball Name: Stainless steel ballsMaterial: AISI304,316,420C,440CSize: 0.8mm-150mmGrade: G10 ... used in iatrical instruments,chemical industry,plastic hard ware,scent bottle sprayer,valve,nail polish,air condition,medical material,automotive fittings ...