Features: 1.Excellent material: stainless steel material, durable and non-magnetic, excellent concentricity. 2.Fine workmanship: high hardness, convenient and durable quality choice. 3.Hexagonal shank design: stable clamping and more time-saving, 4.Wide range of applications: These drill bit sets are suitable for drilling holes in low-hardness wood, aluminum, iron, plastic and other materials.which can save a lot of labor and energy. 5.Easy to use: the principle of drilling edge can be used to quickly replace the composite cone; drilling and tapping step by step can help save processing steps and time, and can also make your work more efficient. Notice: Actual color may be slightly different from the image due to different monitor and light effect Please allow 1-3cm deviation due to manual measurement Description: Product name: Cobalt-containing machine tap Material: high speed steel Sizeas the picture shown Package Includes: 1 X Thread Tap Drill Bits