Ridgid 31320 Chain Wrench, Alloy Steel, For Outside Diameter 5 inch, Minimum Pipe Diameter 2 1/2 inch

Features 

• Double end chain wrenches have a lever with a notched head whose teeth engage the pipe and a short adjustable chain that wraps around the pipe with the chain ends secured to the head. 
• The double end allows turning in either direction without having to remove the tool from the object.