Metric Style: Includes 18cm and 30cm metric triangular ruler, with matte black finish to prevent glare, corrosion resistant and durable, not easy to break. No sharp edges, won't hurt your hand. Premium quality: The square chevron is made of high quality aluminum alloy, high hardness, strong toughness, not easy to rust. Wide Use: This carpenter's square can be used as a protractor, miter, plotter saw guide, framing square and ruler, ideal for all construction and remodeling projects. Easy TO MARK YOUR CUT LINES: This triangular ruler uses a thicker edge design, can be used directly with the saw against the square for cross cuts or angled cuts using the etched scale, allowing you to mark quickly and precisely your cutting lines on your cords. Size: 18cm Metric Triangular Ruler: 18 x 18cm, 30cm Metric Triangular Ruler: 30 x 30cm Product product Features: 1) Laser ruler with steel ruler, precise writing, clear, not easy to wear. Easy to use, comfortable to hold , and conversion chart attached to the surface of the ruler. 3) The humanized design is beautiful and generous, and the craftsmanship is superb and can be used for a long time. < p>Features: Color: Black. Material: High quality aluminum alloy with matte black finish. Style: Metric 18 triangular ruler cm and 30 cm. Contents: 1 metric triangular ruler 18 cm. 1 metric triangular ruler 30 cm