Combination Set Number of Pieces 4 Blade Finish Satin Blade Material Steel Head Length 3 5/8 in Head Width 5/8 in Blade Length 11 3/4 in Blade Thickness 0.08 in Blade Width 1 in Graduation Mark Style Etched Graduation Marks - Front 1/2 mm 1/32 in Graduation Marks - Back 1/64 in Head Type Center/Reversible Protractor/Square System of Measurement Metric/SAE Head Material Cast Iron Head Vial Included Yes Accuracy +/- .0025 in Blade Coating Chrome Features Reversible Lock Bolt