Spiral drill INOX dia. 12.3 mm HSS-E Co5 N DIN 338 135 for tough and hard materials Angle135 Diameter12.3 mm Flute length101 mm Length, total151 mm RPM from, grey cast iron, white cast iron259 RPM RPM from, hard non-ferrous metals647 RPM RPM from, rust and acid-resistant steels259 RPM RPM from, soft non-ferrous metals777 RPM RPM from, steels over 700 N/mm518 RPM RPM from, thermoplastics, fibre-reinforced plastics (GRP/CRP) 388 RPM RPM to, grey cast iron, white cast iron647 RPM RPM to, hard non-ferrous metals1295 RPM RPM to, rust and acid-resistant steels518 RPM RPM to, soft non-ferrous metals1554 RPM RPM to, steels over 700 N/mm647 RPM RPM to, thermoplastics, fibre-reinforced plastics (GRP/CRP) 1036 RPM Spiral angle, from36 VersionINOX Packaging unit5 pieces Drilling tools with cross grinding for industrial uses. Fully ground, right-hand turning versions that produce precise drill holes thanks to their high concentricity and exact centring. PFERD offers spiral drills in the STEEL (