HSS Drill Bit Set Metric Sizes 1.5mm - 10mm 99pcs Steel / Wood / Plastic AT627
HSS 4241 for strength and durability. 1.5mm HSS Drills x 16. 2mm HSS Drills x 16. 2.5mm HSS Drills x 15. 3mm HSS Drills x 10. 3.2mm HSS Drills x 10. 3.5mm HSS Drills x 8. 4mm HSS Drills x 8.