Which of the following is a tool specifically designed for large diameter pipes?

The chain wrench is particularly suitable for large diameter pipes due to its unique design that allows for a strong grip around the pipe. Unlike traditional wrenches that may struggle with larger sizes, a chain wrench utilizes a flexible chain that wraps around the pipe's circumference. This provides a secure hold and allows for significant torque to be applied without damaging the pipe or requiring excessive force.

In contrast, other tools like pipe cutters and torque wrenches are generally used for specific tasks such as cutting or applying force to fasteners, and may not have the same adaptability or effectiveness with large diameter pipes. A pipe bender, while useful for bending pipes, does not specifically provide gripping or turning capabilities. Thus, the design and functionality of the chain wrench make it the optimal choice for working with large diameter pipes.