Educate me on the markings on new slicks

53657992804_52dd88b312_c.jpg20240415_183917 by Hyperpack, on Flickr

Hello All, in the above picture, I want to know what all of the silver marker means if anything.

I know that the 90 1/4" is the Rollout / Circumference of the tire. But what about the 5 HZZ 2? and the 20/10?


Any help is appreciated. I just want to learn about these factory markings.