1 pipe expander drill. Swages 6 Sizes of Tubing: Our 6-in-1 for hvac Repair Tool is capable of swaging 6 different sizes of tubing, including 6，8，10，12,16,19。. Material: Crafted from high-quality bearing steel, our tool undergoes high-temperature quenching and hardening, its durability and resistance to breakage and wear.