6 different sizes of drill bits, including 1/4inch, 3/8inch, 1/2inch, 5/8inch, 3/4inch, 7/8inch, 1/4inch hexagon handle. Our pipe expansion tool are an essential accessory for servicing air conditioners. Metal for long-lasting performance. Enhanced Compatibility: Suitable for most 1/4 inch hex shank tools, this 12-piece set includes versatile adapters that fit a range of drills and drivers. The keychain bit holder ensures convenience for high-altitude operations, expanding its utility across varying conditions. Robust Material: Crafted from Metal, the swaging tool drill bit ensures durability and resistance against wear and tear. Its uniform hardness aids in an efficient swaging process, making it indispensable for HVAC servicing and installations. Ergonomic Design: Featuring a quick-release bit holder, our swaging set promotes ease of use with color-coded bits for swift identification. Ideal for professionals and DIY enthusiasts, it reduces workspace clutter and enhances tool organization. Safe and Efficient Operation: Designed for a working experience, this tool set ensures a leak-proof connection of copper pipes without extensive efforts. Remember to wear protective gear to safeguard against potential hazards during operation., Weight: 0.65918216338 Pounds, Manufacturer: Omvial