6 Sizes Copper Swaging : This set includes 6 different of swaging drill, catering to multiple sizes (1/4'', 3/8'', 1/2'', 5/8'', 3/4'', 7/8''), making it versatile for various HVAC repair tasks Portable & Organized : Our tube expander swage tools are equipped with 6 bit holders keychain that can be easily carried or placed in a tool box and the bit holders have different color that allows you to quickly get the drill you want High-Quality Construction : Crafted from premium chrome vanadium steel, the copper swaging tools are built to withstand rigorous use, ensuring resistance to heat, breakage, wear, providing longevity and reliability in professional settings Efficient Swage Kit : Designed specifically for copper tubes, these tools facilitate precise and efficient expansion, ensuring a secure fit and optimal performance Instructions : These flaring drill bit may generate high temperatures due to friction when in use, so please wear gloves and other safety protective equipment during operation. The holder suit for most 1/4 inch hex socket drill bits Guaranteed & Customer Service : Have 3DSKY HVAC swaging tool, guaranteeing outstanding, reliable, and safe performance at all times. If you have any questions, please feel free to contact us Transform your HVAC and refrigeration work with this comprehensive 12-piece swage tool set. This professional-grade copper pipe expander kit includes six different-sized bits ranging from 1/4 inch to 7/8 inch, making it versatile for various applications. The set comes with a sturdy holder for organized storage and easy access. Perfect for air conditioning installations and repairs, these swaging tools help create precise, reliable connections in copper tubing. The durable construction ensures consistent performance across multiple projects, while the included holder keeps your workspace tidy and tools protected. Whether you're working on residential AC units or commercial refrigeration systems, this complete set provides the essential sizes needed for most common copper pipe expansions. The convenient bit sizes include 1/4", 3/8", 1/2", 5/8", 3/4", and 7/8" to handle a wide range of tubing dimensions.