Description Drillpro 6pcs HSS 1 4 Inch Hex Shank Combination Drill Tap Bit Set UNC or Metric Deburr Countersink BitsComplete Hole Drilling Tapping And Deburring Countersinking In One Operation With Power Drill Saves Labor Time Applicable to some types of carbon steel and ordinary steel copper and Al Mg alloy drilling hole The Metric one is the improved set so they are different as the UNCones Specifications Brand DrillproMaterial High Speed SteelType TapShank 1 4 6 35mm hex shankDIY Supplies MetalworkingMetric Size M3x0 5 M4x0 7 M5x0 8 M6x1 M8x1 25 M10x1 5UNC Size 6 32NC 3 5mm 8 32NC 4 2mm 10 32NC 5mm 10 24NC 5mm 12 24NC 5 7mm 1 4 20NC 6 35mm Weight Metric 75gUNC 50gSizeBit Diameter mm Shank Diameter mm Shank Length mm Blade Length mm Total Length mm M3x0 52 56 35372865M4x0 73 36 35362965M5x0 84 26 35343165M6x15 06 35343367M8x1 256 86 35333669M10x1 58 56 353238706 32NC 3 5mm 2 86 353023538 32NC 4 2mm 3 56 3530235310 32NC 5mm 4 16 3530285810 24NC 5mm 3 86 3530285812 24NC 5 7mm 4 56 353028581 4 20NC 6 35mm 5 16 35302858Features Suitable for soft metal tapping such as aluminum plate 3 4mm thickness The advantage is opening tapping chamfering Note If you need to drill higher hardness materials Please choose HSS 6542 Quantity 6pcs UNC or Metric Tap Drill Bits Package Included 1x Set 6pcs Hex Shank Tap Drill Bits More Details