Description: This Double-edged 3D engraving router bit is perfect tool for woodworking,varies sizes can meet your different need. Features: 1. Double-edged cutting design, excellent concentricity 2. Suitable for materials: Acrylic, MDF, PVC, 3D engraving and chamfer, etc 3. Cut decorative "V" grooves and lettering on signs with the "V" groove bit, using with an edge guide to chamfer and bevel edges 4. The item is only used as engraving tool, not hazardous article 5. Varies sizes for your choice Specifications: Material: Solid Alloy Color: As the picures show Shank Diameter: 6mm Cutting Blade Diameter(Optional): 8mm / 10mm / 12mm / 15mm / 16mm / 18mm / 22mm / 25mm / 32mm Weight: 11-33g Quantity: 1pc Package Included: 1 x V Groove Sharpen Bit