Features: brand new high quality Made of high-quality materials for durability High helix and large chip evacuation for fast metal removal Special brazed elements provide excellent braze strength Excellent impact strength Can withstand high strength Can withstand higher temperatures without failure Cutting close to center For electric or air tool drive (also used in machine tools) Electric or air tools usually rotate at 6000-50000 rpm, suitable for cast iron, cast steel, carbon steel, alloy steel, stainless steel and other materials In most jobs, the rotary burr set can replace the impeller, and the service life is 10 times that of ordinary high-speed steel burrs, and 200 times longer than the impeller. Double Cut Head: The double cut type cuts rows of knives in two intersecting directions for fast material removal and a rougher finish They all have toughened and hardened steel shanks that provide rigidity and strength. This prevents bending and reduces vibration, which increases tool life. Product parameters: Material: tungsten steel solid carbide Handle diameter: 3mm Cutting edge diameter: 6 mm Head: 1/4 inch Handle: 1/8 inch Color: Silver (as pictured) Size: As shown (approximately) Compatibility: Smaller rotation tools Package list: 10 * Tungsten Carbide Rotary Burr Bits 1 * Storage Box Note: 1.The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2.Please allow slight manual measurement deviation for the data. Our products are made of environmentally friendly materials, safe and non-toxic, and will not cause harm to the human body. Please read the product manual carefully before purchasing, and use it correctly according to the operation steps. If you encounter any difficulties or problems during use, please contact us in time, we will solve them for you as soon as possible. Your support is the driving force for us to move forward, and we look forward to sharing your experience and experiences with us. For the quality problems or defects of the product itself, we will provide unconditional return or repair service.