MD B179 D:7.9 Drill Bit

Integral hard metal drill bit 5xD with TiAlN coating, without interior cooling and with cut to the right 140o point angle, 30o spiral angle; special cut geometry for straight drill without pre-punched 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 both dry and with external cooling Diameter: 7.9