High precision and high strength – Made of strong, durable tungsten alloys, the high-quality router bit ensures professional and ultra-precise machining on wood. Long working life – Clean cutting, smooth rotation, fast operation, high hardness, good wear resistance, greatly improves the life of use. Anti-kickback solid design – Steel body hardened with anti-kickback balanced design with high-quality guide and bearings. Stem diameter: 8 mm – Blade diameter: 12 mm; Blade length: 13 mm. Usage – For handcraft or woodworking; MDF, solid wood, particle board, wooden door frames, wooden window frames, cabinets, and boxes. Features: Stable quality, high efficiency Blade Flush Trim Pattern with Top and Bottom Bearings Router Bit Carbide Tipped – Micro grain grade provides increased strength and utmost resistance Heat-resistant coating baking to prevent the accumulation of wood chips, resin, and asphalt Specifications: Material: Carbide Tipped Blade length: 13 mm, 20 mm, 25 mm Color: Black, Yellow, Blue Package included: 3 sizes x Grooving Cutter