Chain Accessories Metal Boat Anchor Chain range: 22MM~122MM Level: AM1, AM2, AM3, BM1, BM2, BM3, R3, R3S, R4 Material: CM370, CM490, CM690, R3, R3S, R4 Ring: outer length * outer width 6D*3.6D Certificates: LR, ABS, DNV-GL, BV, NK, KR, CCS, RINA, RMRS, CCS non-classified Executive standards: ISO1704-2007, GB/T 549-2017, regulations of various classification societies, and other non-standard products to meet the needs of users Anchor Chain Accessories