Detailed description:: Product Name: Electric Drill Rod Auxiliary Tool Material: CNC aluminum alloy/anodized dealing Color: black red Size: 85×50×80mm Blade material: carbide Blade specification: 15×15×2.5mm 30°R150 Round hole specifications: Φ5/16 / Φ3/8 / Φ7/16 / Φ1/2 / Φ9/16 / Φ5/8 / Φ11/16 / Φ3/4 inch Scope of application: cork Applicable scenarios: woodworking Name: Round Nail Head Material: Stainless steel Color: silver Size: 16×16×42mm Self-tapping end: 4mm bottom hole in wood Hexagonal end: The electric drill needs to be able to hold more than 10mm Style (optional): 6Pcs/Set, 8 Pcs/Set Notes: 1.There may be slight differences between the picture and the actual color of the commodity. We will try our best to show you the exact color. 2.Please allow slight dimension difference due to manual measurement. [CNC Aluminum Alloy Material] This dowel maker jig kit is made of premium CNC aluminum alloy material, and the surface is anodized, rust-proof and durable to use. [Round Carbide Blades] With indexable round carbide blades, it is compatible with sharp and provides smoother cutting experience. The carbide blade is designed for making this dowel maker dowel board more effective in making round wooden sticks. [Inch and 8 Holes] It has inch, 8 holes of different diameters (5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4 inch), can meet different work needs. The attached blade can also be used in interchangeable positions, convenient and fast. [Simple to Use] Just loosen the screw, rotate the red cutter holder to the desired diameter, re-tighten the screw and craft in no time, easy to use. [After-sales] If you have any questions, please get in touch with us, our service team will provide you with a professional and satisfactory service.