Made of zinc-iron alloy materials, solid and sturdy, durable and long life to use This manual expansion tool can be used to expand the copper pipe with a diameter of : 4/6/7.5/10/13.5/15/17/18/22mm (0.16", 0.24", 0.3", 0.39", 0.53", 0.59", 0.67", 0.71", 0.87") Convenient and lightweight, spring design, make it work more effort Hinge design: can avoid the handle swing, ensuring the stable operation It is widely used in the maintenance of refrigerators, air conditioners, freezers and other refrigeration equipment Product Description Features: This regulator is made of zinc-iron alloy, strong and sturdy, ensuring durability and longevity. Ergonomically designed handle with coarse surface, comfortable to hold and non-slip. This tool can be used to expand the copper pipe with diameter between 6-22mm. Hinge design to prevent handle wobble, ensuring the stable operation. Easy to use, a simple yet effective hand tool for air conditioner maintenance and repair. Specifications: 1.Condition: 100% Brand New < p>2.Material: Zinc-iron alloy 3.Color: Shown as picture 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-walled stainless steel pipe Package included: 1 x Tube Expander Note: 1. Please allow 1-2mm errors 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.