Sling Hook Clevis Grade 80 4500 LBSClevis Grade 80 3 Sizes Available Sling hook features clevis pin for easy attachment and has been tested and certified for overhead lifting. Hardened Steel Construction Fatigue tested and Magnafluxed 5 16'' Sling Hook Clevis Grade 80 Working Load Limit: 4,500 LBS 3 8'' Sling Hook Clevis Grade 80 Working Load Limit: 7,100 LBS 1 2'' Sling Hook Clevis Grade 80 Working Load Limit: 12,000 LBS