My chain pipe wrenches, The one pictured is a complete kit with the cable and flat chain along with a pipe handle extension in a leather case.
Left to Right, unknown maker, Vulcan kit with cable chain attached to the handle, Vulcan with flat chain, New Champion, Trimo Bull, J. H. Williams Agrippa, J. H. Williams Vulcan Superior.
Some call these salesman samples and some used them for small pipe applications like gas lamp work.