... : stainless steel ballMaterial: AISI304,316,316L,420,440,200,202MDiameter: 5.953mmGrade: G60-G100Certificate: ISO9001:2008 SGS Packaging & Delivery Packaging Detail ... steel balls, ranging from the 440 type which offers the greatest hardness and surface finish to the 302 which has extreme ... order and sincerely co-operate! high polished stainless steel ball 5.953mm