"Grade 70 high test chains are perfect for securing heavy equipment to flatbed trailers for transport. The zinc-coated transport chain is not meant for overhead lifting. The 3/8"" heavy-duty chains are made for industrial, construction, agricultural, and transportation when heavy cargo and equipment are transported on a regular basis. The grade 70 transport chains have a working load limit (WLL) of 6,600 lbs. and provide more security than straps that may rip or tear. In addition to securing equipment and even vehicles up to 6,600 lbs., this chain can be used as a tow chain to help clear paths of lumber and other debris. These high test chains are zinc-coated for additional protection."