18", Chrome Finish, Adjustable Wrench, Longer Jaws Grip Better, Avoiding Slippage Or Nut Round Off, Measurement Scales Front & Back Are Handy For Sizing Nuts, Pipe & Tube Diameters, Greater Jaw Capacity Supports Larger Nuts & Bolts, Thinner Jaws For Greater Access In Tight Spaces, Precise Jaw Design Grips Tight The First Time Every Time, 4 Thread Knurl & Non-Protruding Jaws Provide Greater Capacity, Minimal Head Width Improves Performance In Confined Spaces, Chrome Vanadium Steel Construction.