Item Type: Air Conditioner Tube Reamer Material: Metal Package List 6 x Air Conditioner Tube Reamer 1Efficient Tube Reaming: Features an electric expansion head design that quickly and accurately enlarges the diameter of copper tubes in air conditioners, improving work efficiency. 2Easy Operation: With hexagonal handle design ensures a secure fit on handheld tools (not included), preventing slippage and enhancing safety during operation. 3Heavy Duty Made: Made with high strength metal, sturdy and durable. It is resistant to deformation even after prolonged use, ensuring a long lifespan. 4Wide Application: Used for expanding copper tubes, creates tight connections between two tubes, can be used in residential, commercial, and industrial air conditioning systems. 56 Sizes Included: Comes with six different sized expanders, allowing for the expansion of various diameters of copper tubes, reliable designed could prevent rupture and leakage.