Which tool is specifically designed for pulling and moving heavy objects?

The tool designed specifically for pulling and moving heavy objects is the 6ft Z Hook. This tool is frequently used in firefighting and rescue operations to manipulate heavy pieces of equipment or debris. It features a hook shape that allows firefighters to gain leverage and pull or lift objects effectively.

In contrast, while other options like the water can and sledgehammer have their specific uses, they are not primarily designed for moving heavy objects. The water can is mainly for carrying and delivering water for firefighting purposes, and the sledgehammer is more suited for breaking objects rather than moving them. The 20ft of 4" side intake supply line is intended for water transport, not for pulling or moving items. Thus, the Z Hook stands out as the correct tool for the task of moving heavy objects.