●✔ Size: Shaft Diameter 0.2 inch (6 mm), Blade Diameter 0.4 inch (10 mm), Blade Length 0.4 inch (9 mm), Length 0.2 inch (54 mm) ●✔Type:Double Cut ●✔ Material: Carbide alloy blade, tungsten steel is more abrasion resistant, and the blade is firm and consistently polished ●✔ Features: Suitable for various types of metal processing and polishing such as burrs, shaping, flat welding, enlarging, carving and modification ●✔ PERFORMANCE: High speed rotation, high efficiency, high gloss, excellent cutting quality, suitable for various hard metals such as iron, stainless steel, aluminum, copper