Full of Durability: High hardness alloy, wear resistant, and shock resistant, maintaining efficiency even during prolonged use without overheating or dulling Smooth Double R Edges: The double R angles designing delivers rounded, cutting surfaces without chipping or burrs, producing refined finishes that require without additional sanding Wide Compatibility: Features a standard 8mm shank that fits most engraving machines, trimmers, wood routers, and milling machines, providing secure installation and wide adaptability Stable Flat Bottom Grooving: The flat bottom structure ensures consistent grooved depth and clean edges, ideal for straight, decorative, and joint grooves in woodworking projects Precise Carving: Specially designed for woodworking carving, grooving, and milling, this 8mm shank double R angles router bit ensures smooth cutting and excellent shaping effects for various engraving and molding tasks, Manufacturer: Arecobticy