HSS Jobber Drill, Uncoated, 17 mm Through-coolant: no Standard: DIN 338 Tolerance nominal dia : h8 Point angle: 118 Deg Shank: Plain shank Number of cutting edges Z: 2 recommended maximum drilling depth L2: 99. Note: Size 16 - 20: Drills with shank dia 16 mm. Steam tempered from dia 2.4 mm.