【Long Service Life】 Clean cutting, smooth rotation, fast operation, high hardness, good wear resistance, greatly improves the service life, no burrs. 【Various Sizes】 8 mm - Shank Diameter: 3/4" - Cutter Height: 20mm 8 mm - Shank Diameter: 3/4" - Cutter Height: 25.4 mm. 8 mm - Shank Diameter: 3/4" - Cutter Height: 38.1 mm. 8 mm - Shank Diameter: 3/4" - Cutter Height: 50.8 mm. 【High Quality Material】 - Body Material: Solid Hardened Steel. Blade Material: Industrial Grade Micro-Grain Carbide 【Widely Used】Suitable for all types of cutting and engraving machines. Suitable for wood, MDF, particleboard, plywood and other compact panels. 【Usage】Can be used to form a wooden door, very sharp, sharp blade cuts smoothly without burrs, no burrs. The structure is simple and easy to use. For your daily carpentry work provides a lot of convenience.