Close but no ceee-gar.

The ones I got were a set of 10, about an inch thick & probably 5" square. The come in a nylon bag to keep them all together.

I usually have to use 2 stacks of 5 under the stabalizer jacks on the front of our RV. The back is easy - just put the stabalizers under the scraper bars (I'm a NOOB so I don't know what they are really called).