Up to dia 1.9 with 4 facets- from dia 2 with relieved cone.
3 mm Overall length L: 143 mm Shank dia Ds: 18 mm Feed f in steel A wide range of applications in steel materials thanks to a combination of tough ultra-fine grain carbide and an extremely wear-resistant coating. The robust cutter geometry ensures high-performance drilling with good process reliability..5 mm Dia, 140 Deg Point Angle, TiAlN Coated, Plain Shank Standard: DIN 6537 Tolerance nominal dia : h7 Number of cutting edges Z: 2 Tolerance nominal dia : h7 recommended maximum drilling depth L2: 68.