Contents: 1 x 18cm Metric Triangle Ruler. 1 x 30cm Metric Triangle Ruler Metric Style: Includes 18cm and 30cm metric triangle ruler, with matte black finish to prevent glare, corrosion-resistant and durable, not easy to break. No sharp edges, will not hurt your hand. Premium Quality: The rafter square is made of high quality aluminum alloy, high hardness, strong toughness, not easy to rust. Wide Use: This carpenter square can be used as a protractor, miter, scribe saw guide, framing square and ruler, ideal for all building and remodeling projects. Easy to Mark Your Cutting Lines: This triangle 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 quickly and accurately mark your cutting lines on your seams. Size: 18cm Metric Triangle Ruler: 18 x 18cm, 30cm Metric Triangle Ruler: 30 x 30cm