Heavy Duty Pipe Wrench is made of carbon steel Size: 8", 10", 14", 18", 24", 36" Heavy Duty Pipe WrenchSingle cast malleable iron frame and handle, Accurately machines, Drop forged steel jaws,Knurled adjustment nut, Heavy duty enamel finish.Size: 8", 10", 14", 18", 24", 36" Heavy Duty Pipe Wrench