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. Easy to Operate: The comfortable double handle grips make it labor-saving to use and can be easily operated with one hand, reducing fatigue and speeding up the repair process. 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. Complete Set: The kit includes 1 tubing expander body, 7 expander heads, 1 pipe cutter, 1 chamfering tool, 1 deburring reamer, and 1 thickened carrying case. Welcome and I wish you a happy life, my friend., Manufacturer: DCDCD