It sounds like you're looking for a specific tool: a spring tube bender designed for 5/8'' outer diameter (O.D.) pipe or tubing. This tool is particularly useful for bending copper, aluminum, and thin-walled steel tubing, ensuring clean and precise bends without damaging the material. These types of benders typically feature a spiral spring design that wraps around the tubing. The spring helps prevent the tube from kinking or collapsing while bending, making it easier to create smooth curves. They are often used in plumbing, HVAC, and automotive applications.