[DURABLE MATERIAL] Crafted from bearing steel, our tube expander boasts exceptional hardness and wear resistance. This ensures longevity and reliability, making it the ideal choice for both amateur and professional users in HVAC installations. [VERSATILE SIZES] This set includes 6 different expander sizes, ranging from 1/4" to 7/8", designed to fit various air-conditioning copper pipe diameters. Easily tackle any project with the right tool at your fingertips, enhancing your efficiency and effectiveness during installation. [SECURE DESIGN] Featuring a standard round handle, our expander is engineered to firmly attach to your electric drill. Experience less frustration as you work with a tool that stays securely in place, allowing for seamless operation and minimized of slippage during use. [EASY TO USE] In no time, you can expand copper pipes to fit together effortlessly. Simply attach it to your electric drill, and you're ready to connect copper pipes efficiently—a must-have for homeowners and professionals dealing with air conditioner installations. [PREVENT CRACKING] Our pipe expander maintains excellent ductility throughout the expansion process, significantly reducing the chances of pipe cracking or leaking. Trust this tool to provide a tight seal when connecting copper pipes, ensuring performance and durability in your HVAC systems., Manufacturer: Jelquix