Xtra Slim 3/16 In. jaws offer maximum accessibility. Super wide jaw opening lets user tackle big jobs with a compact wrench. 4-thread knurl and non-protruding jaws provide greater capacity and minimal head width improves performance in confined spaces. Measurement scales (standard and metric) are convenient for sizing nuts, pipe and tube diameters. Chrome vanadium steel construction with Code Blue grips for durability and comfort.