High Hardness: This composite tap set features high hardness and toughness, thanks to an advanced heat treatment process. It's built to withstand wear and tear, making it ideal for heavy-duty applications Spiral Groove Structure: The spiral groove design ensures smooth and efficient cutting, reducing friction and enhancing chip removal. This allows for faster, cleaner tapping even in challenging materials Integrated Drilling and Tapping: Save time with the integrated design that allows for drilling and tapping in one step. This multifunctional tool is perfect for DIY projects, metalwork, and professional tasks, offering precision and speed Versatile Size Range: This 6-piece set includes taps in M3, M4, M5, M6, M8, and M10 sizes, offering versatility for various tasks Hex Shank: The hex shank fits most power tools, making it easy to use for both professionals and hobbyists Specifications: Product material: high speed steel Size: M3: total length 55mm, drill length 6mm, tap length 10mm, tap spacing 0.5mm M4: total length 55mm, drill length 6mm, tap length 10mm, tap spacing 0.7mm M5: total length 57mm, drill length 7mm, tap length 11mm, tap spacing 0.8mm M6: total length 57mm, drill length 7.7mm, tap length 11mm, tap spacing 1mm M8: total length 58mm, drill length 7.5mm, tap length 16mm, tap spacing 1.25mm M10: total length 58.5mm, drill length 11mm, tap length 16mm, tap spacing 1.5mm