[ High precision and high strength ] - Made of strong, durable tungsten alloys, the router bit ensures professional and ultra-precise machining on wood. [ Long working life Use--Cut clean, smooth rotation, fast operation, high hardness, good wear resistance, greatly improve the life of using. [Anti-kickback solid design]--Steel body hardened with anti-kickback balanced design with guide and bearings. [ Shaft diameter: 8 mm ] - Blade diameter: 12 mm; Blade length: 13 mm mm 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 X Cutter a Groove Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.