Spiral drill INOX dia. 2.8 mm HSS-E Co5 N DIN 338 135 for tough and hard materials Angle135 Diameter2.8 mm Flute length33 mm Length, total61 mm RPM from, grey cast iron, white cast iron1137 RPM RPM from, hard non-ferrous metals2843 RPM RPM from, rust and acid-resistant steels1137 RPM RPM from, soft non-ferrous metals3412 RPM RPM from, steels over 700 N/mm2275 RPM RPM from, thermoplastics, fibre-reinforced plastics (GRP/CRP) 1706 RPM RPM to, grey cast iron, white cast iron2843 RPM RPM to, hard non-ferrous metals5687 RPM RPM to, rust and acid-resistant steels2275 RPM RPM to, soft non-ferrous metals6824 RPM RPM to, steels over 700 N/mm2843 RPM RPM to, thermoplastics, fibre-reinforced plastics (GRP/CRP) 4550 RPM Spiral angle, from36 VersionINOX 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 (118 point angle