B820 8xD Drill Bit with RI D:11.5

Integral hard metal drill bit 8 x D with TiAlN coating, with interior cooling and cut to the right 135o point angle, 30o spiral angle; special cut geometry for direct drill without pre-sharpening which at the same time ensures perfect concentracity; special sharpening of the channels to reduce the coefficient of friction, improving the extraction of vibrate; allows to work in both dry and external cooling. Diameter: 11.5