Features Dual Use: The angle is 135°, the drill bit has both functions of drilling and tapping, and one drill tap can be used for multiple purposes. Fine Workmanship: Precisely machined and hand polished, these drill taps has smoothly appearance and fine threads, which can ensure good using experience. High Speed Steel Material: Made of premium high speed steel material, these drill taps are strong and sturdy, not easy to break, possesses premium wear resistance. Scope of Application: These drill taps can be used for thick cast iron, thick steel plate, mold steel, stainless steel, aluminum alloy, iron, etc. 6Pcs: There are 6 pieces drill taps in this package of different sizes, you can use them respectively to meet different needs. Specification: Item Type: Threaded Drill Taps Material: High Speed Steel Application: Thick cast iron, thick steel plate, die steel, stainless steel, aluminum alloy, iron, etc. Basic Parameters: Tap Size: M3 M4 M5 M6 M8 M10 Package List: 6 x Threaded Drill Taps 1 x Plastic Box Package List 6 x Threaded Drill Taps 1 x Plastic Box