[Metal Material] Our dowel maker jig is made of premium Metal alloy material, and the is anodized, which is not easy to rust and to use. [Sharp Carbide Blades] Our product has indexable round carbide blades, which is sharp and can cut smoother. It has 8 gouge holes in different diameters, meeting different needs. [Easy to Use] Loosen the screw, rotate the red cutter holder to the desired diameter, then re-tighten the screw and craft quickly. This product is suitable for cork and woodworking. [8-20mm Holes] This product has metric 8 holes of different diameters (8mm 9mm 10mm 12mm 15mm 16mm 18mm 20mm). The blade an also be used in interchangeable position. Product Name: Dowel Maker Jig Blade specification: 15x15x2.5mm 30°R150 pre-installed Round hole specification: Φ8/Φ9/Φ10/Φ12/Φ15/Φ16/Φ18/Φ20mm Scope of application: cork Applicable scene: woodworking Note: Due to different production batches, there may be slight differences in products. Colour:Photo Color Material:Metal Package Contents: 1 x Woodworking fixture 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.