Combination Set, Number of Pieces 4, Blade Finish Satin, Blade Material Steel, Head Length 2 1/4 in, Head Width 7/16 in, Blade Length 12 in, Blade Thickness 0.06 in, Blade Width 5/8 in, Graduation Mark Style Etched, Graduation Marks - Front 1/64 in, Head Type Center/Reversible Protractor/Square, System of Measurement SAE, Head Material Cast Iron, Includes Blade, Head Vial Included No, Accuracy +/- .0025 in, Blade Coating Chrome