General description This keyless drill chuck features a self-tightening design that enhances reliability when securing tools. It is ergonomically designed for easy operation and quick bit changes, making it a practical choice for various drilling tasks. Technical specifications Connection Size: 1/2-20UNF Clamping Range: 2-13mm / 0.04-0.51in Diameter: 43mm / 1.69in Length: 71mm / 2.8in Compatibility and accessories Suitable for impact drills with a power of 1050W or more Installation Easy to install and disassemble, providing convenience and labor-saving benefits Usage Designed for holding drill bits firmly, ensuring they do not loosen during operation Durable construction suitable for long-term use Wide range of collet sizes accommodates various drill bits