The Tap HSS 9x1.25 & Drill 7.7mm 2Pc Set is a combination of a high-speed steel (HSS) tap and a drill bit, designed for threading and drilling applications. The tap, with a size of 9x1.25, is ideal for creating internal threads in materials such as metal, while the 7.7mm drill bit allows for precise hole drilling to match the tap’s specifications. This set provides a convenient and effective solution for tapping and drilling in one package, ensuring a reliable and efficient operation for various mechanical and construction tasks.