Material:AISI304,316,420C,440C Size:0.8mm-150mm Grade: G10-G1000 Standard:ISO 9001 ... Name: Stainless steel ballsMaterial: AISI304,316,420C,440CSize: 0.8mm-150mmGrade: G10-G1000Hardness: AISI304 and AISI316 are soft materials ... .40-0.501.0 max1.0 max0.04 max0.03 max1.0 max12.0-14.0AISI440C0.95-1.201.0 max1.0 max0. ... ,G12,G10Any further Information,Plz contact us! 8mm High Quality Stainless steel ball