Description 1. Upgraded woodworking tools 2. 3-in-1 hole marking ruler 3. High quality aluminum alloy CNC 4. Parallel/Vertical Lines 5. Accurate and neat Thoughtful design with multi specification angle positioning and drawing lines. Insert the positioning column to easily achieve multi angle marking. Treatment:Anodized. Please note:the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Colour:A:Black Material:Aluminum Alloy Package Contents: 1 * 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.