===1/2" Grade 100 Alloy Chain. === ===Blue Cataphoresis Finish.=== ===Made from 8620 alloy. 100% proof tested to 2 times the WLL.=== ===With X100 markings every foot.=== ===Made to ASTM A973 Specs.=== ===Material Diameter = 0.512" === ===Inside Width = 0.768"=== ===Inside Length = 1.64"=== ===W.L.L. = 15000 lbs.=== ===M.B.S. = 60000 lbs ===