These are 33 gal heavy plastic containers with the tops cut out-15 each.
These will far out last the typical containers bought in hardware or department stores. I use them in several places in my shop & shed. I cut the tops out and cut a handle in each side for ease of carrying. Presently, I have no 55 gal. containers. But depending on what you plan to put in them, that size is often too heavy for one person to empty. My 33 gal cans are 29" tall, 19" in diameter with a diameter opening of 17" $15 each or $28 for 2.