Marine Anchor Chain: Marine Stud and Studless (Open) Link Anchor Chain; Mooring Anchor ChainGrade U1, U2, U3, R3, R3S etc.Diameter: 12.5mm to 120mmCertificate: ABS, BV, CCS, DNV, GL, LR, NK, KR, RMRS, RINA etc. and Mill CertificateAccessories: Common Link, Kenter Shackle, Enlarge Shackle, Swivle Unit, Delta Plate etc.Types of Anchor Chain..