Which wrench uses straps as jaws to grip objects with delicate surfaces?

The strap wrench is specifically designed to grip objects with delicate surfaces without causing damage. Its construction includes a flexible strap that wraps around the item being handled, distributing the pressure evenly across the surface. This makes it ideal for use on items like plastic plumbing fittings or polished surfaces where even slight abrasions can cause significant harm.

In contrast, other wrenches such as the socket wrench and the crescent wrench use rigid jaws that can potentially scratch or mar delicate surfaces due to their solid metal construction. The pry wrench, primarily intended for prying and lifting rather than gripping, does not serve the same function as a strap wrench. Thus, the strap wrench stands out for its ability to securely hold objects without risk of damaging them, making it the correct answer to the question.