CM Hammerlok Coupling Link, Series HercAlloy 800, 114 in, 72300 lb, Drop Forged Alloy Steel Constructed of Drop Forged Alloy Steel and Used Primarily in The Construction of Overhead Lifting slings Specifically Used For Connecting The Chain Branches to The Master Link and to The Hook Attachments Dual Rated Hammerlok Meet The Strength Levels of Grade 80 and 100.