Features Durable: The adjustable electric drill milling rod tool is made of aluminum alloy, which is hard and wearproof, with good insulation performance and long service life. 8 Hole Design: This dowel maker has 8 holes of different diameters, 8mm, 9mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, to meet your various working needs. Easy to Use: 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. Effective Design: This dowel maker jig tool is beautifully designed, light and practical, easy to carry, equipped with a sharp and durable indexable carbide blade, providing you with a smoother cutting experience. Wide Application: This adjustable milling rod tool is suitable for mortise and tenon structure enthusiasts, engineers, carpenters, and decoration workers, and is a must have tool for wood industry workers. If someone around you is keen on DIY, this will Specification: Item Type: Dowel Maker Jig Kit Material: Aluminum Alloy 8 Holes of Different Diameters: 8mm / 0.31in, 9mm / 0.35in, 10mm / 0.39in, 12mm / 0.47in, 14mm / 0.55in, 16mm / 0.63in, 18mm / 0.71in, 20mm / 0.79in Package List:1 x Dowel Maker Jig1 x Pin1 x Blade1 x Wrench Package List 1 x Dowel Maker Jig 1 x Pin 1 x Blade 1 x Wrench