Material:AISI304,316,420C,440C Size:0.8mm-150mm Grade: G10-G1000 Standard:ISO 9001:2008/SGS test ... ball Name: Stainless steel ballsMaterial: AISI304,316,420C,440CSize: 0.8mm-150mmGrade: G10-G1000Hardness: AISI304 and AISI316 are soft materials. For ... ,G18,G16,G14,G12,G10Any further Information,Plz contact us! 8mm High Quality Stainless steel ball