Features Durable Construction: Made from high-quality bearing steel for exceptional strength and longevity, ensuring reliable performance in various applications Enhanced Malleability: Preserves the malleability of copper and aluminum during swaging, effectively preventing cracks and leaks for a secure connection Versatile Compatibility: Perfectly designed for expanding copper and aluminum pipes, with multiple sizes available to accommodate various project needs Convenient Usage: This set of tools provides practical solutions for pipe expansion, making it an essential addition to any professional or DIY toolkit Efficient Performance: Designed to easily connect two copper pipes during air conditioning installations, streamlining your project and saving time Features: 1、These swaging tool drill bit set is made from quality bearing steel, which is sturdy and . 2、This tool can preserves copper aluminum malleability while doing the swaging, avoiding cracks and leakages. 3、When the air conditioner is installed, the copper pipe expands and connects the two copper pipes to each other. 4、Suitable for the expansion of copper and aluminum pipes, with a variety of sizes to choose from. 5、These swaging tool drill bits are convenient and practical for pipe expansion, and has a wide range of uses. Specification: Item Type: Swaging Tool Drill Bit Set Material: Bearing Steel Purpose: Tube Expander Colour: Black System: Inch Expander Size: Approx. 7/8 (22.2mm / 0.87in), 3/4 (19mm / 0.74in), 5/8 (15.9mm / 0.62in), 1/2 (12.7mm / 0.5in), 3/8 (9.5mm / 0.37in), 1/4 (6.m / 0.24in) ) Expander Height: 7/8 and 3/4 Are 5.5cm, 5/8 and 1/2 Are 5cm, 3/8 and 1/4 Are 4.5cm Package List: 6 x Swaging Tool Drill Bit Set Note: To be used in conjunction with the specified pistol drill. Do not use it outside the required voltage and speed range. Package List 6 x Swaging Tool Drill Bit Set