Irwin Cast Iron Pipe Wrenches 3" x 24"Constructed from the highest grade cast iron, forged and heat treated to ensure maximum durability. Unique hammer head design provides a flat surface for hammering Easy spin adjusting nut is heat treated for durability Wide I beam handle design provides better weight distribution Drop forged jaw is heat treated to resist distortion or breakage Hardened teeth provide tremendous bite Housing constructed of heavy duty cast iron