Made of zinc-iron alloy materials, solid and sturdy, durable and long-lasting This manual expansion tool can be used to expand the 4/6/7.5/10 diameter copper pipe /13.5/15/17/18/22mm (0.16", 0.24", 0.3", 0.39", 0.53", 0.59", 0.67", 0 .71", 0.87") Convenient and lightweight, spring design, makes it more tiring to work Hinge design: can avoid the handle swinging and ensure stable operation It is widely used in the maintenance of refrigerators, air conditioners, freezers and other refrigeration appliances Product Description Features: This regulator is made of a zinc -Iron alloy, is strong and sturdy, ensuring durability and longevity. p> Ergonomically designed handle with rough surface, comfortable to hold and non-slip. With this Tools can be copper tubing between 6-22mm in diameter. Hinged ign to prevent the handle from shaking and ensure stable operation. Easy to use, a simple yet effective hand tool for cleaning, maintaining and repairing the air conditioner. Specifications: 1.Condition: 100% Brand New 2.Material: Zinc Iron Alloy 3. Color: As picture shown 4. Handle Length: Approx. 155mm / 6.1inch 5.Tube Expander Length: Approx. 154mm / 6.06inch 6. Package Weight: Approx. 400g 7.Applicable: Copper Pipe, Aluminum Pipe and Thin Wall Stainless Steel Pipe Package Contents: 1 x Tube Expander Note: 1. Please allow 1-2mm error due to manual measurement. 2. Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same.