From the U.S. perspective ,just stay away from hippo magnets which I have bought and they suck. Also anything that sounds chinese. Its all about providing the cheapest product and lying about the pull strength. The magnets can be wafer thin too. Which will break easily on impact. I have this kit and I have did some weight tests and its actually starts failing at around 630 pounds. Which is good since its rated at 500. https://www.amazon.com/Magnet-Fishing-Pull-Force-Neodymium/dp/B07B5K15BP