I just bought these after seeing a few people recommend them.
Amazon product ASIN B074R17GL4 They work as well as a jack stand can, they have a safety pin and I'm alive and well and if you use 4 then 12 tons is 24,000 pounds which is more than enough . I think chocking your wheels and leave as many wheels on as you can is probably the number 1 life saver honestly. If I had to guess it's the jack stand falling over due to vehicle movement or use on an incline that probably gets people. I also always throw a tire (that's off the truck) under the size for the frame to land on should it fall with me near it.
Also note that they go to 23.5 inches which is nice. The 3 ton jack stands aren't going to be tall in enough in a few situations and then you're gonna be shopping for something taller which ends up being stronger.