I don't knowant, but the team are very responsive. Mine was jammed and I wrote back to the team. They responded within hour and provided a return bar code. My credit was approved as soon as I dropped off at UPS.
It's pretty strong, but I could not be sure of a 130# muscular dog. I would try one and if it breaks give up a retractable leash. Wish I could be of more help, but I think these are not going to hold up on such large dogs.