For the most demanding signmaking, lettering and engraving tasks. Designed for creating signs and other CNC projects in a variety of materials. Each router bit is manufactured from Amana's exclusive grade carbide according to stringent quality standards. Designed for cutting: Carbon Fiber Laminate MDF Melamine Plastic/Acrylic Solid Surface Wood Veneered Plywood Includes:Insert V-Groove, 1/4" Shank 1/4" Solid Carbide Spiral Plunge, 1/4" Shank 1/16" 5.4° Tapered Angle Ball Tip, 1/4" Shank 0.005" Solid Carbide Coated Router Bit, 1/4" Shank