This dowel board is made of high-quality material, which is strong and durable, and the surface is anodized, which is not easy to rust and can be used for a long time. This dowel maker has 8 holes of different diameters: 8mm, 9mm, 10mm, 12mm, 15mm, 16mm, 18mm, 20mm, to meet your working needs. Equipped with indexable round carbide blades, which are sharp and durable, making this dowel making machine more efficient and easy to use, saving your time and energy. Loosen the screw, rotate the red blade holder to the desired diameter, re-tighten the screw to start crafting. The included blades can also be used in interchangeable positions for easy convenience. This adjustable milling rod tool is suitable for mortise and tenon structure enthusiasts, engineers, , and decoration workers, and is a must-have tool for wood industry workers. If someone around you is keen on DIY, this will be the best gift. Product Description: Specification: Product name: Dowel Maker Jig CNC aluminum alloy / anodized treatment Blade specification: 15 x 15 x 2.5mm 30R150 Round hole specification: 8/9/10/12/15/16/18/20mm Material: Metal colour: As shown Package Contents: 1 x pin manufacturing fixture 1 x blade wrench (T20) 1 x adjustable wrench (5mm) 3 x fixing screws 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.