... .GradeClass4.8,Class 6.8, Class 8.8, Class 10.9, Class 12.9Diameter1/8"-3/8",M3-M12Minimum Order ... petroleum indestry, construction industry,etc.length5-160mm, 1/5"-63/10"MarketDomestic,South&north Amrica,Europe,East&South east Asia, Australia ... quality control. GOOD SERVICEWe will respond to you within 24 hours. We can manufacture nonstandard parts according to your drawings. And we will continue ...