It should be a rattle can. It has a red button on the lid. You take it off the lid and put it on the bottom, then smack it down on a hard surface. That will pierce the membrane and you can shake it up for a couple of minutes. Test it on some cardboard to see what you want for a pattern. Tip, put one medium coat on, then with 30 minutes and come back with a lighter coat farther away distance wise. That should give you a nice textured appearance. Hope that helps.
That 4879 would be the 1k product. It would probably look the same, but would not be near as durable. UPO820 would be a 2 part 4 liter kit. You would need a shoots gun too. UP0726 is the number for that, but your probably back up to couple hundred invested again then or a little less.