1. This self-centering dowel jig line scriber is crafted from high quality Aluminium alloy, making it sturdy and to wear and rust. 2. It comes with seven sleeves made from heavy-duty steel, capable of withstanding multiple grinding from high-speed drill bits. 3. The tool's design allows carpenters to use a self-centering pin drill guide fixture to drill straight center holes using a square. 4. The compact block is equipped with two pins and seven drill sleeves, facilitating quick center-location identification for center-line drawing and center hole drilling. 5. Its practicality is further enhanced by its ability to also function as a mini square. Colour: As Shown Material:aluminium style:A Imperial Tips: The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Package Contents: 1 * self-centering dowel jig line scriber kit 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.