Similar to DIN 338. Nominal dia and shank dia equal. TiAlN coating for even better performance. Note: Flute length LC = L2 + 1.5 x DC. Non slip clamping in drill chuck No. 341050 with diamond coated jaws. Through-coolant: no Standard: DIN 338 Tolerance nominal dia : h7 Number of cutting edges Z: 2 Tolerance nominal dia : h7 recommended maximum drilling depth L2: 44.2 mm Overall length L: 86 mm Shank dia Ds: 5.2 mm Feed f in steel < 1100N/mm2: 0.08 mm/rev.