Roller container

Okay kiddo, so have you ever seen those big metal boxes that trucks carry on the highway? They use them to transport lots of different things like furniture, clothes, and electronics.

Well, a roller container is a special kind of metal box that is designed to be moved easily from one place to another. It has wheels on the bottom that let you roll it around, which makes it easier for people to load and unload things from it.

Roller containers are used in lots of different industries, like shipping, construction, and even for storing things like books and supplies in a warehouse. They're really helpful because they can be stacked on top of each other, so you can fit more stuff in a smaller space.

So basically, a roller container is just a big metal box with wheels that is used to transport or store things. Pretty cool, huh?