Multiple expansion diameter: can be used to expand copper pipes with diameter 5mm, 7mm, 8.5mm, 11.5mm, 14.5mm, 17mm, 18mm, 20mm, 22mm. Zinc and iron alloy material: Made of zinc and iron alloy, has good heat resistance and corrosion resistance, and is not easy to deform. Used for appliance repair: widely used in the maintenance of refrigeration equipment such as refrigerators, air conditioners, freezers, etc. Built-in return spring: l The tube expander has a built-in return spring, which is easy to operate and saves labor, and the reaming is more efficient. Double-head design: The expander adopts a double head design, easy to replace and suitable for working in narrow space. Feature: 1. Built-in return spring: The tube expander has a built-in return spring, which is easy to operate and saves labor, and the reaming is more efficient. 2. Double-head design: The expander adopts double-head design, which is easy to replace and suitable for working in a narrow space. 3. Multiple expansion diameter: can be used to expand copper pipes with diameter 5mm, 7mm, 8.5mm, 11.5mm, 14.5mm, 17mm, 18mm, 20mm, 22mm. 4. Zinc and iron alloy material: Made of zinc and iron alloy, has good heat resistance and corrosion resistance, and is not easy to deform. 5. Used for Appliance Repair: Widely used in the maintenance of refrigeration equipment such as refrigerators, air conditioners, freezers, etc. Specification: > Item Type: Tube Expander Material: Zinc Iron Alloy Lens: Expander Expander Bore Size: Approx. 5mm/0.2in, 7mm/0.28in, 8.5mm/0.33in, 11.5mm/0.45in, 14.5mm/0.57in, 17mm/0 .67in, 18mm/0.71in, 20mm/0.79in, 22mm/0.87in Handle Length: Approx. 153 mm/6 in Tube expander length: approx. 155mm / 6.1inch Package List: 1 x Tube Expander Note: Please use this extender at low speed, so may not find the size you want.