Patented adjustment plate and tooth system eliminates old fashioned knurl and is 5 times faster than traditional systems Pulling down on adjustment plate disengages teeth and allows quick adjustment by simply pushing moving jaw until it meets the fastener Dual frequency teeth guarantee exact fit on both SAE and Metric fasteners Virtually no jaw play means no need to fine adjust wrench between fasteners Jaws remain parallel at all widths SAE and Metric scales for measuring fasteners 15° jaw angle provides greater leverage than standard 22° wrenches, reducing fatigue Heat treated chrome vanadium steel for professional use Product Number Model Opening Length 711112 AW-6 3/4" 6" (160mm) 711113 AW-8 1" 8" (210mm) 711114 AW-10 1-1/4" 10" (250mm) 711115 AW-12 1-1/2" 12" (300mm) * All Pictures Shown Are For Illustration Purpose Only. Actual Product May Vary Due To Product Enhancement.