Super heavy-duty Grade 70 tow chains are the most rugged assemblies ever offered for your most demanding towing applications. Factory welded 5/16" chain and the highest quality B/A Products certified components, provide 20% more working load than standard Grade 43 tow chains. RTJ Cluster and Grab Hook can be used for a number of towing applications. T-hooks and R-hooks are Grade 70 alloy. Gold dichromate zinc plating offers a luxurious look, as well as superior weather resistance in the toughest environments. .