This chain wrench fits diameter up to 6.1 inches, so it works perfectly as filter tool, pipe installation tool, etc.. This chain wrench fits diameter up to 6.1 inches, so it works perfectly as filter tool, pipe installation tool, etc.. This chain wrench fits diameter up to 6.1 inches, so it works perfectly as filter tool, pipe installation tool, etc.. The tightly connected chain ensures strong holding and catching, which promises working performance.. Through heat treatment, higHquality steel has excellent hardness up to HRC60..
