1. Woodworking big convenient small tools, easy to mark accurate swallow tail 2. Precise swallow tail layout, precise CNC processing 3. Four Proportions of Hardwood or Cork Markers 4. Aluminum alloy, black treatment, white markings. 5. Bottom corner and bottom are loosened to accuracy. The angle ratio of dovetail joint gradually increases from 1:5 to 1:9, and the angle becomes larger and larger. The commonly used angle is about 80 degrees, that is, 1:6 or 1:7. This ratio is beautiful and convenient to manufacture. Hollow out the central part to facilitate the use of marking Colour:Black Material:aluminum alloy Package Contents: 1 * Dovetail Marker Aluminum Alloy Woodworking Dovetail 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.