me j hook tow chain long shank with t-j & grab hook 5/16''x8' grade 70 me co maunfacturer express 5/16''x8' long shank j hook tow chain with t-j & grab hook features working load limit of 4,700 lbs, breaking strength of 18,800 lbs, the 5/16'' grade 70 chain ensures the strength of this tow chain will meet the most demanding jobs.