slbrillreHigh Precision and High Strength: - Made of solid tungsten alloys, durable, the high quality cutting router bit ensures professional and ultra-precise machining on wood. Long Lifespan: - Clean cutting, smooth rotation, fast operation, high hardness, good wear resistance, greatly improves the life of use. Solid Anti-kickback Design: - Hardened steel body with anti-kickback design balanced with high quality guide and bearings. Shank Diameter: 8 mm: - Blade Diameter: 12 mm; Blade Length: 13 mm. Usage: - For handcrafting or woodworking; MDF, solid wood, particle board, wooden door frames, wooden window frames, cabinets and boxes. Features: Stable quality, high efficiency Blade Flush Trim Patter with Top and Bottom bearings Router Bit. Carbide Tipped - Micro grain grade provides increased strength and utmost esistance. Heat-resistant coating baking to prevent the accumulation of wood chips, resin and asphalt. Specification: Material: Carbide Tipped Blade length: 13mm, 20mm, 25mm Color: Black, yellow, blue Package included: 3 sizes