The grade 70 1/2 in x 20 ft chain assembly is a great choice for tackling heavy-duty tie-down jobs in the trucking, towing and logging industries as it is the strongest chain Ancra offers. Made with high-strength carbon alloy steel and heat-treated and 100% proof-tested to twice its original working load limit, the chain assembly features an 11,300 lb capacity with reliability that lasts for years. A zinc-plated gold chromate finish helps protect the chain from rust and corrosion. Heat-treated alloy steel clevis hooks provide a strong connection to anchor points that can be depended on for heavy-duty lifting. The grade 70 1/2 in x 20 ft chain assembly is made to NACM standards per specifications of the Department of Transportation and CCMTA for tie-down use with properly marked links and aluminum tags with stamped WLL information.