Klein Tools' 24-Inch (610 mm) Standard Capacity Adjustable Wrench is made of forged, heat-treated alloy steel for maximum strength and light weight. The precision-machined jaws are individually chosen and assembled by hand to ensure smooth operation. Contoured, tapered handles make them comfortable to use.PRODUCT FEATURES:- Forged heat-treated alloy steel for light weight and maximum strength - High polish chrome finish - Precision-machined jaws are individually chosen and assembled by hand for smooth operation - Heat-treated for long life - Knurl turns smoothly for easy operation - Rail is ground for precision fit - Contoured handles for comfortable use - Chrome-plated for rust resistance