kwb 4 mm Metal Drill HSS-E 248640 (Industrial Quality, Extreme Heat Resistance, for Difficult-to-Machine Materials, Precision-Ground, DIN 338) - Jobber Drill Bits - Amazon.com
Stanley STA50120-QZ Metal Drill Bit HSS-R 13mm Drill Diameter 151mm Total Length 101mm Spiral Length DIN338 Suitable for Metals Pack of 1 Black/Yellow - - Amazon.com
Gertus 1915550 Metal Case with 25 Spiral Drill Bits DIN 338 HSS-CO 130° Diameter 1-13.0 x 0.5 mm Increasing - - Amazon.com