Pferd Carbide Burr, Series: High Performance Line, Radius, 3/8 in Head dia, 3/4 in Length of Cut, 2-1/2 in Overall Length, Cylindrical-Radius End (Shape SC) Head Shape, Micro Cut Type, 1/4 in Shank dia, Carbide Head, 24000 rpm Maximum, Applicable Materials: Cast Iron, Cast Steel, Non-Ferrous Metals, Steel and Stainless Steel, SC-3 Industry Specification.Carbide burrs with micro cut are specifically designed for finishing and are used in areas in which abrasive mounted points are usually used. They offer a higher stock removal rate and produce a high surface quality, particularly compared with conventionally milled surfaces. They also operate with low vibration and little noise. They maintain their geometry over their entire service life, and are well suited to manual and machine applications. Almost all materials up to a hardness of 940 HV (68 HRC) can be machined. Pferd 27542 High Performance Line Oil Line Brush, Radius End, Cylindrical - Radius End (Shape SC) Head, 3/8 in dia Head, 3/4 in L of Cut, 2-1/2 in OAL