Feature:1. Drill and Tap: The tap drill bit with 135 degree design enables tapping and drilling, which will largely simplify your working.2. Smoother Work: Smoother surface ensures smoother working to facilitate the assembly line production, very practical and reliable.3. Broad Utility: Allows for wide application on thick cast iron, thick steel plate, die steel, stainless steel, iron and so on.4. Ti Plated HSS: Using Ti plated high speed steel material, both the wear resistance and cutting performance are greatly improved.5. 6Pcs in Total: There are 6pcs tap drill bit of different specification, including M3, M4, M5, M6, M8 and M10 to meet your needs.Specification:Item Type: Tap Drill BitMaterial: Ti, high speed steel. Application: For thick cast iron, thick steel plate, die steel, stainless steel, aluminum alloy, iron, etc. Tap Size: M3, M4, M5, M6, M8, M10. .Package List:6 xTap Drill Bit1 x Plastic Box