Premium Quality: C3 micrograin tungsten carbide blades, solid hardened steel body with smart anti-kickback design for a clean and durable cut SizeRound edge cutter with 8mm shank, 3.17mm/4.76mm/6.35mm/7.96mm/9.52mm/12.7mm radius. Perfect for cutting stencils and other DIY projects. Wide Application This professional round shank router bit kit is suitable for wood, MDF, particleboard, plywood, acrylic, and various wood composite materials (avoid cutting metal and non-wood materials such as steel, iron, and sand). Applicable Equipment Use on CNC and other automatic routers as well as portable and desktop routers such as bakelite milling machines, engraving machines, deburring machines, tabletop milling machines, hanging milling machines, etc. Special Features: Shank Diameter: 8mm. Blade Material: C3 Carbide Blade. Body Material: 45# Carbon Steel. Radius: 3.17mm/4.76 mm/6.35 mm/7.96 mm/9.52 mm/12.7 mm. Package: Set of 6 Rounded End Mills. Tips: 1. The item is only for industrial cutting/engraving. 2. Keep it safe when not in use. 3. Please wear good protective measures. 4. The cutter is quite sharp, please keep it away from children.Welcome to meet