Long Use LifeCut sharp, smooth rotation, fast operation, high hardness, good wear resistance, greatly improve the life of use, no burrs. Different Sizes 8mm - Shank Diameter: 3/4 - Cutter Height: 20mm 8mm - Shank Diameter: 3/4 - Cutter Height: 25.4mm. 8mm Shank Diameter: 3/4 Cutter Height: 38.1mm 8mm - Shank Diameter: 3/4 - Cutter Height: 50.8mm. High Quality Material -Body Material: Solid Hardened Steel. Blade Material: Industrial Grade Micro-Grain Carbide Widely UsedSuitable for all types of cutting and engraving machines. Suitable for wood, MDF, particle board, plywood and other solid board. UseCan be used to form wooden door, very sharp, sharp blade smooth cutting without burr, no burr. The structure is simple and easy to operate. For your daily work as a carpenter offers a lot of comfort. 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. Sold by-Minnanxin