Ancra 45881-13-20 Transport Chain with Grab Hooks, Grade 70, 1/2-Inch by 20-Feet, Bulk Designed specifically to provide a light, yet strong chain for tie downs Made from carbon steel and zinc plated gold chromate for corrosion resistance Heat treated and 100% proof tested to 2X WLL rating Made to NACM standards per specifications of the Department of Transportation and CCMTA for tie down use All clevis hooks are made of heat treated alloy steel