You are looking at a Rubbermaid brand mop bucket. It is just the bucket, no mop wringer. It came from my brother's estate. He was a maintenance man at a facility and probably wore out the mop!
Of course you could use it for cleaning, but I have been using it for gardening. It is great for moving dirt and plants around the greenhouse. I can also imagine it would be great to plant a tree or bush that you want to protect from the harshest of winter, but still move outside sometimes.