Adjustable Wrench, 16-Inch Construction Wrench, Fits All Nuts and Bolts Up To 1-1/2 Inch Klein Tools 3239 Versatile wrench fits all nuts and bolts to 1-1/2-Inch (38 mm) Eliminates the need for carrying several fixed-size wrenches Forged from select alloy steel with continuous-taper handle for aligning bolt and/or rivet holes Industrial black finish for corrosion resistance Precision-machined jaws are individually chosen and assembled by hand for smooth operation