Steel Thread Spiral Screw

🔩SAVE TIME, MONEY & ENERGY!🔩 Whether you're a hobbyist, a mechanic or a machinist who constantly works with fasteners, you can create threaded holes with ease when you have this Thread Tap Drill Bits Set! This set is designed for the most demanding projects and the hardest materials. The bits can drill, tap, and countersink holes in just one step because they are able to quickly penetrate materials. They come in a wide range of sizes and have a self-centering point to help the user maintain accurate placement. These are extremely easy to use which makes them a must-have accessory for your daily purposes. Complete hole drilling, tapping & deburring. Countersinking in one operation with a power drill. Thread Tap Drill Bits Set saves labor and time! The thread drilled by the drill is very reliable. Even if you do not use an electric drill, you can easily screw in the screws just by hand, saving a lot of work time. Made of High-Speed Steel 4341 material, higher hardness,