Adjustable Wrench, Extra-Capacity, 8-Inch Klein Tools 507-8 Extra capacity allows use of a smaller size wrench to handle bigger jobs, especially in confined spaces Forged heat-treated alloy steel for light weight maximum strength and long life High polish chrome finish is rust resistant Precision-machined jaws are individually chosen and assembled by hand for smooth operation Contoured handles for comfortable use Extra capacity allows use of a smaller size wrench to handle bigger jobs, especially in confined spaces. Forged heat-treated alloy steel for light weight maximum strength and long life High polish chrome finish is rust resistant Precision-machined jaws are individually chosen and assembled by hand for smooth operation Contoured handles for comfortable use