... customer request.ROHS approved.Hardness: 60-90 shore.Color for o rings: Black, Purple and so on.Color for box: ... , model no: 5A[2]30 sizes, total 382pcs, JIS B 2401 standard, model no:5B[3]30 sizes, total 386pcs ... , JIS B 2401 standard, model no: 5C[4]32 sizes, total ... , model no:8B[5]32 sizes, total 419pcs, JIS B 2401 standard, model no: 8C Non-standard size is also ...