Description A product of the swaging process with this tool making their way into HVAC systems line set, perfect for installers, no matter a beginner or an expert. Made of metal material ,it has high and uniform hardness and wear resistance, and high elastic limit. Features - Color: Black. - Material: Metal. - Adopting hexagonal handle design, the swaging tool drill bit set can be perfectly matched with the hand electric drill to unfold the copper pipe quickly, saving your time and effort. - This swaging tool drill bit set is made of premium metal materials, high-temperature resistance, wear resistance, and not easy to break for long service life. - A full range of flaring tool drill bit set makes it easier to expand HVAC pipes and provide a large swaging depth to achieve a perfect fit. - Swaging tool drill bits need to be installed on hand electric drill. - Perfect for installers, no matter if you are just learning or have been doing it.Packing list: 1 x Tube Expander