●This CBN Ball End Mill has realized both advantages of CBN and Carbide．
●Depth of Cut can be increased at the equivalent level to Carbide．
●Unique flute design with R-accuracy ±0．005 prevents chipping!
●Flute is smoothly tangent from straight line to R-curve．
●Applicable for hardened materials up to 68HRC!
●We recommend using oil mist coolant．