... Anchor Chain 1 Grade U3 2 Size 22mm-71mm 3 LR, ABS, DNV, BV, NK, ... GL, RINA,CCS, KR 4 High quality, good service U3 Stud Link Anchor ChainGrade: U3Size: 22mm-71mmSurface: bituminous paintCertificate: LR ... according to your requirment.Specification of Studless Link Anchor Chain: U3 Stud Link Anchor Chain U3 Stud Link Anchor Chain