Long Series Twist Drill Bit 4 x 175mm
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Helical point with split point
Point angel - 130deg
Helix angle - 40deg
Tolerance - H8
Surface - bright / black
Flute length - 120mm
Ideally suitable for deep holes under difficult conditions.
Suitable for all usual drilling work in all normal materials.
High rotational precision
For steel and cast steel alloyed and unalloyed up to 900N/mm strength, grey cast, malleable cast iron, die cast metal, iron sintor, nickel silver, graphite cast iron, short chipping aluminium alloys, bronze and brass