Type Multistep, with two spiral-shaped cutting grooves and fixed drill, HSS, TiN coating, cylinder(without flat, HA), three-surface grind
in metal case
TiN coating gives longer service life, higher cutting speeds and reduced edge build-ups.
Consisting of:257530.0100: 1 pieces Multistep drill Type Multistep, HSS, TiN L1-S TiN 4.0-12.0mm
257530.0200: 1 pieces Multistep drill Type Multistep, HSS, TiN L2-S TIN 6.0-20.0 mm
257530.0300: 1 pieces Multistep drill Type Multistep, HSS, TiN L3-S TIN 6.0-30.0 mm