Adjustable Wrench, Alloy Steel, Black Oxide, 18 in, Jaw Capacity 2 1/16 in, Plain/ OVERALL LENGTH: 18.000 INCHES NOMINAL WRENCHING SURFACE SIZE: 2.062 INCHES MAXIMUM SINGLE END WRENCHING SURFACE SHAPE: OVAL SINGLE END INTERNAL SPECIAL FEATURES: AUTOMATIC JAW LOCKING MECHANISM MATERIAL: STEEL OVERALL SURFACE TREATMENT: OXIDE OVERALL STYLE DESIGNATOR: 3 OPEN END SINGLE HEAD RACK AND WORM ADJUSTMENT SPECIFICATION/STANDARD DATA: 05047-ASME B107.100 CAT 8 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD NONDEFINITIVE SPEC/STD DATA: 1 TYPE