[Material] - The woodworking router bit set is made of hot-hardened carbide cutting edges and forged tool holders, high strength, high hardness, good wear resistance and strong impact resistance. [Various Sizes] - Shank diameter: 6 mm; Cutting length: 4 mm/ 5 mm/ 6 mm/ 8 mm/ 9 mm/ 9.52 mm/ 10 mm/ 11 mm / 12 mm/ 14 mm/ 16 mm; Number of groove cutters: 11. [Precise] - The high-quality cutter ensures professional and ultra-precise processing on wood. [Clean cut] - The cutter has clean cut, stable rotation, fast working speed, the cutting material has no burrs, and the use effect is perfect. [Suitable for] - The cutter can be used for notching a variety of materials, including solid wood, MDF, chipboard, plywood. Features: A high-quality wood alloy for sharper and more durable edges, high-quality alloy steel housing. < p>Use this groove cutter for all straight cuts with 2-sided carbide blades. Can improve deep cuts and smooth edges. There are 11 different specifications of alloy