Kutzall tools are fast-cutting and long lasting, designed to work easily and efficiently where other conventional tools fail. Their tungsten carbide coatings consist of hundreds of extremely sharp teeth that rapidly remove stock and last 7 to 10 times longer than high-speed steel tools. They are not prone to loading but may easily be cleaned with solvent or burned clean with a gas torch.Whether you are a casual hobbyist or professional craftsman, Kutzall's durable carbide coatings will last job after job. All Burrs are used for various carving, hobby, industrial or do-it-yourself applications in flex-shaft tools or popular hand-held grinders with collets or adjustable chucks. Tool diameters are approximate and do not include the thickness of the coating.When it's your special hobby, do-it-yourself project or industrial application, Kutzall will provide you with the effortless control and superior performance you demand. With over 50 years of experience, Kutzall has long been the leader in the industry.Kutzall Original tools are the most popular and versatile tools in the Kutzall line. They feature sharp, uniform pointed teeth of exceptionally hard metals, brazed onto the steel tool form. These tools remove material very rapidly, yet leave a relatively fine surface on the work. Kutzall Original tools also provide a very smooth cutting action for ease of control. Recommended Max RPM is 25,000.For more info please visit www.Kutzall.com.