6pcs Hss Hex Shank Combination Drill Bits Tap Countersink Set (silver)

Description: 1. High quality and brand new. 2. Suitable for drilling, tapping, cutting soft metals, aluminum plates, iron, etc. 3. The quick-change compound can be used as an electric drill. 4. One-step tapping can greatly reduce processing steps and time costs, and improve work efficiency. 5. Self-centering blade, unassisted centering 6. High hardness, stainless steel, strong and durable. 7. Indicators: M3x0.5, M4x0.7, M5x0.8, M6x1, M8x1.25, M10x1.58. Material: HSS Chuck: 6.3mm (1/4 inch) Hex Chuck Size: M3x0.5: total length: 55mm, coil length: 24mm, hole diameter: 2.5mm M4x0.7: total length: 54mm, spool length: 24mm, hole diameter: 3.3mm M5x0.8: total length: 58mm, spool length: 28mm, hole diameter: 4.2mm M6x1: total length: 58mm, spool length: 28mm, hole diameter: 5.0mm M8x1.25: total length: 59mm, spool length: 18mm, hole diameter: 6.8mm M10x1.5: total length: 59mm, spool length: 20mm, hole diameter: 8.5 mm Square handle: 6.35mmPackage includes: 6*Hexagons form hexagons