Combination Square Blade, Compatible with Manufacturer Model Number C11H-12-4R, Compatible with Grainger Part Number 2ZUR1, Graduation Units Inches, Millimeters, Blade Coating Chrome, Blade Finish Satin, Blade Length 12 in, Blade Material Steel, Blade Thickness 0.094 in, Compatible Head Type Bevel Protractor, Square, Graduation Scale 4R, Blade Width 1 in, Graduation Marks 1/64 in, Quick Reading 1/32 in, System of Measurement Metric/SAE