Up to dia 1.9 with 4 facets- from dia 2 with relieved cone.
Note: Flute length LC = L2 + 1. Straight major cutting edges and a special flute profile ensure a good chip evacuation. Pro Steel Solid Carbide Drill, 19.5 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: 71.