Features: The 7 inch square protractor comes with a high quality aluminum alloy which is equipped with clear metric measurements, lightweight and practical, elegant workmanship, good oxidation resistance, durable use. MULTIPLE USES: The triangle ruler can be used as a protractor, miter, line scriber, saw angle and ruler, ideal for all construction and remodeling projects. Specifications: Material: Aluminum Alloy Size: as picture show Color: Blue Weight: 190g Box contents: 1 x Triangle Ruler Note: There may be a slight color difference due to different monitor settings. Please allow 1-2cm differs due to manual measurement.