SUPERIOR QUALITY MATERIAL: Made from alloy steel hardened at elevated temperatures, our HVAC Swaging Tools are sturdy, , and molded in one piece, ensuring lasting resilience and premium performance to facilitate your HVAC work efficiently. CONVENIENT AND EFFORTLESS TOOL: This Copper Pipe Expander features a mountaineering buckle and keychain catch lever, allowing easy attachment to backpacks and other equipment for hassle-free carrying. Complemented with electric drill use, manual expansion becomes a breeze offering the much-needed convenience and preserving your energy. COMPLETE SET OF DIFFERENT SIZES: Our HVAC tools set comprises six varying sizes of tube expanders: 1/4inch, 3/8inch, 1/2inch, 5/8inch, 3/4inch, 7/8inch, all featuring a 1/4inch hexagon handle. This complete collection is an indispensable tool for expanding copper tubes when repairing air conditioning units and other HVAC systems. VALUE-FOR-MONEY PACKAGE: Each pack comes complete with a 6pc Copper Pipe Expander, 6pc