Material: YG6 primary alloy cutter head, 45 carbon steel cutter body, surface sprayed. For woodworking: shank diameter is 8mm, blades diameter is 47.6mm, compatible with various wood engraving machines. Widely used for CNC milling or other auto routers. Especially for craft drawers, desktops, laptops or wooden crafts. Applicable materials: suitable for medium density fiberboard (MDF), solid wood, particle board, plywood, wooden door frames, wooden window frames, cabinets and boxes, etc. Avoid cutting ferrous and non-wood materials, such as steel, iron, sand. , etc. Debris-Free Engraving: Ultra-thin, industrial-grade carbide blades can safely control depth of cut. The high angle of the hook and rake allows the knife to slice smoothly, resulting in clean, debris-free material. Delicate and practical, compact structure, high hardness, firm and strong. An essential accessory for professionals and DIY enthusiasts. Scope of delivery: One piece