<ul><li>Stem: 6.35mm hex shank. Metric: M3 x 0.5, M4 x 0.7, M5 x 0.8, M6 x 1, M8 x 1.25, M10 x 1.5.</li><li>Drilling and tapping in one step , which greatly saves processing steps and time costs, improves work efficiency.</li><li>Automatic centering point, no need for centering aid or centering point. cutting</li><li>More durable: enough resistance to bending and wear.</li><li>Suitable for drilling, tapping, cutting soft metal, aluminum plate, iron, etc.</li></ul> <b></b> 1. Top quality product. 2. Suitable for drilling, tapping, cutting soft metal, aluminum plate, iron, etc. 3. Quick replacement of the composite cone, uses the bevel edge drilling principle. 4. One-step drilling and tapping, greatly save processing steps and time costs, improve work efficiency. 5. Automatic centering point, no need for centering aid or punching. 6. High hardness, anti-rust, strong and durable. 7. Metric: M3x0.5, M4x0.7, M5x0.8, M6x1, M8x1.25, M10x1.5. 8. Material: HSS Rod: 6.35 mm in diameter. <b>Dimensions:</b> M3 x 0.5: total length : 54 mm, spiral length: 24 mm, drill diameter: 3 mm. M4 x 0.7: total length: 54 mm, spiral length: 24 mm, hole diameter: 4 mm. M5 x 0.8: total length: 57.5 mm, spiral length: 28 mm, drill diameter: 5 mm. M6 x 1: total length: 57.5 mm, spiral length: 28 mm, drill diameter: 6 mm. M8 x 1.25: total length: 58 mm, spiral length: 18 mm, hole diameter: 8 mm. M10 x 1.5: total length: 58 mm, spiral length: 20 mm, drill diameter: 10 mm. Square handle: 6.35 mm. <b>Contents:</b> 6 hex handle drill bits</p >Note: The data are all manual measurement, please allow 1 - 3cm error, due to the difference in light and display, there will be a certain color difference, depending on the physical object receipt Delivery Quantity: (according to the main picture)