Straight Pipe Wrench, Cast Iron, Jaw Capacity 3 1/2 in, Serrated, Overall Length 18 in, I-Beam/ OVERALL LENGTH: 18.000 INCHES NOMINAL WRENCHING SURFACE SIZE: 2.500 INCHES MAXIMUM SINGLE END WRENCHING SURFACE SHAPE: RECTANGULAR SINGLE END INTERNAL SPECIAL FEATURES: HEAVY DUTY MATERIAL: IRON HANDLE STYLE DESIGNATOR: 131 STRAIGHT JAW