GUHRING Foret helicoidal TB NU carbure monobloc FIRE AC queue HA 12xD 20mm

Solid carbide jobber drill, SuperLineDesign: Right cutting, with special grinding. With twisted internal cooling through the bar. Normal angle of rake, core thickness thicker than normal and without core gradient. The drill has a very good self-centring behaviour and produces short chips, even from long-chipping materials. Application: For accurate holes with narrow Ø tolerances and good surfaces. Suitable for drilling deep holes up to 12 x D with high cutting values. Particularly suitable for economical production of deep drill holes in steel, castings and non-ferrous metals.