This oblique angle drill is made of high speed steel and is designed for drilling in wood, plastic and metal. It is used to thread the interior of a hole and create a female thread that can accept a mating male thread. The oblique drill is a type of drill with cutting edges at the tip and along the grooves used to cut the threads. A high speed steel tenon drill bit can be used to machine threads in a of materials including metal, wood, plastics and composites. And sharp and burr-free, the polished makes threading smoother. The drill bits are available in a of sizes, from very small to very large. The size of the tenon bit depends on the size of the hole and the type of material being processed. You can choose according to the tools. The drill bits are of hexagonal shank type, which is widely used and held more securely. The is made of high speed steel, hardened and fully ground to make the tenon bit . The high-quality material is . Under natural conditions, our drill bits are not easily corroded or deformed, so you can use them with confidence. Colour:As Shown Material:Metal Size:6/8/10/12mm Package Contents: 4 x drill bits Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.