- Complete Set: This 6-piece electric drill chuck key set includes essential sizes: 20 mm, 16 mm, 13 mm (two keys), 10 mm, and 6 mm. Each key is designed to meet your specific drilling needs, ensuring versatility for various projects. - Durable Material: Made from high-quality carbon steel with a black surface coating, these tools are resistant to rust and corrosion. This robust construction guarantees longevity and reliable performance over time. - Ergonomic Design: The long handle design offers excellent leverage, making it easy to tighten or loosen the chuck. Each chuck key features 11 or 12 teeth, ensuring even pressure distribution to prevent slipping or deformation during use. - 4-in-1 Chuck Key: This multifunctional tool includes slots with diameters of 5.3 mm, 6 mm, 5.7 mm, and 5.7 mm, along with cone teeth diameters of 14 mm, 12.7 mm, 16.5 mm, and 16 mm. It is compatible with hammer drills and various other drill types, enhancing your toolset's flexibility. - Compact and Portable: The compact design makes it easy to transport, allowing you to carry it in your toolbox or worksite bag without taking up too much space. Use Scenarios: 1. Ideal for DIY enthusiasts who need reliable tools for home improvement projects, ensuring they have the right chuck key for any drill. 2. Perfect for professional tradespeople who require durable and efficient tools for daily use in construction or repair tasks. 3. A must-have for hobbyists working with different drill types, providing the versatility needed for various drilling applications.