Diamond Chicken Drill is one of the types of drill that is actually made of 2 drills and has a function like Khazineh drill. It is mostly used in the turning industry.https://sepandtools.com/product/%D9%85%D8%D8%AA%D9%87-%D9%85%D8%B1%D8%BA%DA%A9-%D8%A7%D9%84%D9%85%D8%A7%D8%B3-Titex-3/3/
