Gee, what can you say about a sack barrow? Evidently quite a lot!
A sack barrow, or a hand truck, is also known as a two wheeler, stack truck, trolley, trolley truck, sack truck, dolly, or bag barrow. Technically its an L-shaped box-moving handcart with handles at one end, wheels at the base, with a small ledge to set objects on, flat against the floor when the hand-truck is upright. The objects to be moved are tilted forward, the ledge is inserted underneath them, and the objects allowed to tilt back and rest on the ledge. Then the truck and object are tilted backward until the weight is balanced over the large wheels, making otherwise bulky and heavy objects easier to move. It is a first-class lever.
Who would have known? Well we have a couple and they do make shifting stuff easier.