Easy to Use: With a 1/4inch hexagon handle, the drill bit set is simple and easy to use, which can be directly connected to the electric drill interface 1/4 Hex Drill Bit Holder: The quick-release design of the drill bit extension kit ensures efficient and convenient use. You can hang it onto your belt, your tool bag, your ladder, and more Advantages: Compared to other copper tube flaring tools, our 6-in-1 copper pipe swaging drill bit with 6 sizes, eliminates the need for frequent size changes. It's portable, easy to use, highly efficient, and for money 6 in1 Swage Tube Expander Tool: 1/4inch, 3/8inch, 1/2inch, 5/8inch, 3/4inch and 7/8inch Efficient Work: It creates leak-free connections, providing high efficiency, speed, and visible results, ultimately saving you valuable time, Manufacturer: Akfldms