Slip Hook, Hook Type Slip Hook, Working Load Limit 5,100 lb, Lifting Capability For Lifting, Grade 80, Material Alloy Steel, Hook Opening Width 1 1/8 in, Usable Length 3 in, Eye Inside Diameter Not Applicable, Eye Inside Height Not Applicable, Thread Size Not Applicable, Shank Diameter Not Applicable, Shank Length Not Applicable, Clevis Inside Width 1/2 in, Attachment Type Clevis, Clevis Pin Diameter 3/8 in, Markings None, Compatible Chain Grade 80, Compatible Chain Trade Size 5/16 in