Alloy steel Joining D shackle for anchor chains 1) Grade U2, U3, 2) Material: Alloy steel Alloy steel Joining D shackle for anchor chains1) Grade U2,U3, 2) Material: Alloy steel3) Finish: Various colors available4) Cert: ABS, LR, DNV, RINA, KR, BV, GL, CCS, NK, mill test cert, etc.,