1. Aluminum alloy material, corrosion-resistant, antioxidant, and durable 2. Multi specification angle positioning line drawing, easy to achieve multi angle marking by inserting positioning columns. 3. High definition precision scale, corrosion-resistant, antioxidant and durable, making marking operations more precise Product Name: 3-in-1 Triangle Hole Ruler Usage: Woodworking measuring and marking There may be slight color difference or difference between the actual product and the actual product. Specifications: Inch Colour:Black Material:Aluminum alloy Package Contents: 1 x Triangle Hole Ruler Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.