Heavy duty grade 70 transport chain is made using high-strength carbon steel and coated with a yellow zinc chromate finish for corrosion protection and quick identification. This domestic (USA Made) chain is heat-treated, and strength tested for superior quality. All our grade 70 chains are embossed with the proper markings to meet NACM standards. Fitted with forged carbon steel clevis grab hooks attached at both ends. Grade 70 chain is required to transport equipment along state highways and interstates.