... chain is retrieved with a windlass.1. Material: U1, U2, U32.Certificate: CCS, ABS, LR, GL, DNV, NK, BV, KR, ... RINA3. Surface: Galvanized or according to your requestWe can also provide grade 1, 2 and ... quality as well as services. Stud link Chain Diameter: 1/2 to 2-3/4 inches, 12.5 to ... assemblies, D type anchor shackles. Open Link Chain Diameter: 1/2 to 2-3/4 inches, 12.5 to ...