Self-Locking Hook, Hook Type Self-Locking Hook, Working Load Limit 15,000 lb, Lifting Capability For Lifting, Grade 100, Material Alloy Steel, Hook Opening Width 2 in, Usable Length 10 7/8 in, Eye Inside Diameter 1 13/16 in, Eye Inside Height 1 3/4 in, Thread Size 1/2 In., Shank Diameter Not Applicable, Shank Length Not Applicable, Clevis Inside Width Not Applicable, Attachment Type Swivel, Clevis Pin Diameter Not Applicable, Compatible Chain Grade 100, Compatible Rope Diameter 1/2 in