Basic Product Information: Name: 7-inch 45-degree angle ruler Material: Aluminum alloy Weight: Black: 235g Black, Blue: 7-inch metric Measurement Accuracy: 0.1 Package Contents: 1 x Carpenter's Triangular Ruler Advantages: 1. Lightweight and convenient 2. Accurate scale 3. Strong and sturdy 4. Good oxidation resistance Features of the Woodworking Ruler: 1. The Speed Square is made of aluminum alloy, making it corrosion-resistant, durable, and not easy to break. The woodworking measuring ruler has a clear punch scale and precise measurements. 2. Easy to work with, saving you time and effort; easy to use and convenient to hold. 3. Ergonomic design, beautiful appearance; each corner of the ruler has been specially polished, smooth, and won't hurt your hand. Product Description: Premium Material: The 7-inch triangular square is made of high-quality aluminum alloy with a matte black finish to prevent glare. Corrosion-resistant and durable. Good oxidation resistance. Not easy to break.