The tube expander kit is an essential tool designed specifically for the repair and maintenance of pipes. It is suitable for expanding copper, aluminum, and flexible steel tubing from 0.4 to 1.1 inches. Details Build to Last: The product is made of steel material through the hardening process, with high strength, corrosion resistance, oxidation resistance, and not easy to deform, which can ensure long-term use. High Compatibility: The 7 replaceable expander heads allow it to handle pipe sizes from 0.4 to 1.1 inches and fit a variety of pipes such as copper, aluminum, and flexible steel, ensuring compatibility with various pipe maintenance tasks. Working Assistant: Precision is paramount when dealing with tube expansion in cold storage mechanisms. The tube expander kit guarantees a secure and accurate fit by uniformly expanding the tube to establish leak-proof connections. Clear Model Number Labeling: Each expander head is clearly labeled with the model number, making it easier to find and select. Specifications Material: Steel Process: Hardening Color: Blue, Silver, Black Pipe Cutter Model: CT-312 Red Chamfering Tool Model: CT-208 Blue Deburring Reamer Model: CT-207 Operate Mode: Manual Number of Expansion Heads: 7 Compatible Tube Size: 10-28mm/0.4-1.1in Gross Weight: 3.57kg/7.87lbs Net Weight: 3.39kg/7.47lbs Carrying Case Size: 53*22*7cm/20.86*8.66*2.75in Package Size: 52.5*21.7*6.6cm/20.67*8.54*2.6in Package Included 1* Tube Expander Kit 1* Carrying Case 1* English Manual   How to Use 1.Use a blue deburring reamer to remove burrs from the tube. (Please note that the tube to be expanded must be a hose or annealed tube.) 2.Pull the expander handle to the 90-degree position, hold it in this position, and rotate the appropriate-size expander head onto the expander pin and tighten. 3.Fully insert the end of the pipe onto the expander head. 4.Push the lever handle down to the bottom. 5.Pull the lever handle back to the 90-degree position and remove the expanded pipe.