Features: This oblique angle drill is 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 accepts a mating male thread. He drill bits are available in a variety 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. Under natural conditions, our drill bits are not easily corroded or deformed, so you can use them with confidence. Specifically tailored for hand drills, our tenon drill bits are user-friendly and versatile. The cutting-edge design facilitates quick and easy cutting, making them suitable for a wide range of metal parts, ensuring both economy and practicality in use. Specifications: Component:High Speed Steel Length:Approx.10mm/0.39inch Drill depth:Approx.50mm/1.96inch Package Includes: 8Pcs Eccentric Twist Drill Bit note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.