Adjustable Wrench, Alloy Steel, Black Oxide, 6 in, Jaw Capacity 15/16 in, Plain/ OVERALL LENGTH: 6.000 INCHES NOMINAL WRENCHING SURFACE SIZE: 0.938 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