hand tools--pipe wrench: 1) Size: 6"-60" 2) Hook jaw drop-forged 3) Heavy duty pipe wrench, cast iron frame ,dipped handle hand tools Heavy duty pipe wrench American type :1) Size: 6",8", 10", 12", 14", 18", 24", 36", 48",60"2) Hook jaw drop-forged with high quality carbon steel and heat-treated3) Teeth induction quenched, cast iron handle Heavy duty pipe wrench American type