1. Long service life: The dowel maker jig is made of excellent aluminum alloy for long service life. The excellent material gives you excellent user experience and makes your work more comfortable. 2. Smooth Cutting: The dowel maker jig features a rounded carbide insert for a smoother cutting experience. The dull rotating blades are as sharp as new, with a blade block that can rotate 4 times. 3. 8 rotating holes: The dowel maker jig has 8 rotating holes of different diameters. Loosen the screw and turn the red bracket to the desired diameter, retighten the screw and you're done. 4. Perfect Tool: The dowel making jig is an essential tool for woodworkers that allows them to easily create perfectly sized and shaped dowels. The jig is specially designed to create round wooden rods and dowels of consistent size and shape. 5. Auxiliary tool: The dowel making jig is an auxiliary tool that can be used in combination with other woodworking tools, such as lathes and routers. It provides woodworkers with an additional tool for creating precise, consistent dowels, and makes it easier to create round wooden rods. Specification: Item Type: Dowel Making Jig Material: Aluminum Alloy Color: Black and Red Round Hole Sizes: Dia. 8 mm / 0.31 inch, diameter. 9mm/0.35inch, diameter. 10mm/0.39inch, diameter. 12mm/0.47inch, diameter. 15mm/0.59inch, diameter. 16mm/0.63inch, diameter. 18mm/0.71inch, diameter. 20mm / 0.79 inch Surface Finish: Anodized Blade Material: Carbide Blade Package List: 1 x Dowel Making Jig 1 x Blade Wrench 1 x Adjustment Wrench 3 x Fixed Screws