The strongest link – Mantus swivel is stronger than its corresponding Grade 40 chain. (WLL is 1/5 UBS) Integrated shackle design completely eliminates side loading making this the safest swivel on the market. The pin on the chain side of the swivel is the strength limiting part since the geometry of the chain determines the pin size. Mantus swivel is the first to feature an oblong pin to maximizes the pin strength, with the aid of computer modeling and physical testing we truly created a swivel that is the strongest link. 316 L stainless steel body and Duplex Stainless Steel Pin Chain Size 1/4 (6 mm) 5/16 (8 mm) 3/8 (10 mm) 7/16 (11 mm) 1/2 (13 mm) Recommended swivel model for a given chain size and type Grade 30 Chain S1 S1 S2 S2 S3 Grade 40 Chain(G4 HT) S1 S1 S2 S3 S3 Grade 70 Chain S1 S2 S3 S3 NA
