Dormer A77727/64 NAS907J Jobber Drill, Bronze Coating, Cobalt High Speed Steel, 10.72 mm Head Diameter, 94 mm Flute Length (Pack of 5): Amazon.com: Tools & Home Improvement
RUKO 215215 HSSE-Co 5 Twist Drill Set, DIN 338, 25 Pieces: Amazon.com: Tools & Home Improvement
BOSCH CO2159B 1/2 In. x 6 In. Cobalt M42 Drill Bit - - Amazon.com
Tivoly A21 – Pack of 6 Drill Bits for Metal DIN 338 HSS + TiN (Diameter of 2, 3, 4, 5, 6, 8 mm - - Amazon.com