- Specifications : Diameter: 43mm; Length: 71mm; Connection Size: 1/2-20UNF; Clamping Range: 2-13mm. - Secure Grip : This chuck is designed to hold drill bits firmly and securely, ensuring they do not loosen during operation. Its reliable performance supports extended use, making it ideal for long working hours. - Versatile Compatibility : The 1/2-20UNF drill chuck features a keyless, self-clamping design that accommodates drill bits ranging from 2mm to 13mm. It functions as an adjustable electric drill chuck driver converter, making it suitable for various applications. - User-Friendly Design : Installation and disassembly are straightforward, facilitating quick changes between drill bits without hassle. Its compatibility with a broad range of clamp sizes (1-13mm) allows for flexibility in your drilling projects. Applications : 1. Home Improvement : Perfect for DIY enthusiasts working on home renovations, this chuck provides the security needed for drilling into various materials like wood, metal, and plastic. 2. Professional Use : Ideal for contractors who require dependable, long-lasting equipment capable of handling demanding tasks while maintaining a high level of accuracy. 3. Hobby Projects : Great for hobbyists engaged in model making or crafting, allowing for precise drilling in multiple small-scale projects. This drill chuck not only enhances the efficiency and safety of your drilling tasks but also improves overall usability across a range of applications.